Home / 13,278,747,102.48-18,324,688,857.84-7,639,849,856.70

Finding the Fourth Proportional to 13,278,747,102.48, 18,324,688,857.84 and 7,639,849,856.70

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Solution

The fourth proportional to 13,278,747,102.48, 18,324,688,857.84 and 7,639,849,856.70 is: 10,543,003,075.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278,747,102.48 : 18,324,688,857.84 = 7,639,849,856.70 : x
  2. Step 2: Convert to fraction form
    13,278,747,102.48/18,324,688,857.84 = 7,639,849,856.70/x
  3. Step 3: Cross multiply
    13,278,747,102.48x = 18,324,688,857.84 × 7,639,849,856.70
  4. Step 4: Simplify right side
    13,278,747,102.48x = 139,997,871,544,641,011,712
  5. Step 5: Solve for x
    x = 139,997,871,544,641,011,712/13,278,747,102.48
  6. Step 6: Final answer
    x = 10,543,003,075.83

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.