Home / 13,320.37-18,381.13-7,655.13

Finding the Fourth Proportional to 13,320.37, 18,381.13 and 7,655.13

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Solution

The fourth proportional to 13,320.37, 18,381.13 and 7,655.13 is: 10,563.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.37 : 18,381.13 = 7,655.13 : x
  2. Step 2: Convert to fraction form
    13,320.37/18,381.13 = 7,655.13/x
  3. Step 3: Cross multiply
    13,320.37x = 18,381.13 × 7,655.13
  4. Step 4: Simplify right side
    13,320.37x = 140,709,939.70
  5. Step 5: Solve for x
    x = 140,709,939.70/13,320.37
  6. Step 6: Final answer
    x = 10,563.52

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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.