Home / 13,121,236.70-18,107,314.35-7,320,018.45

Finding the Fourth Proportional to 13,121,236.70, 18,107,314.35 and 7,320,018.45

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Solution

The fourth proportional to 13,121,236.70, 18,107,314.35 and 7,320,018.45 is: 10,101,629.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,236.70 : 18,107,314.35 = 7,320,018.45 : x
  2. Step 2: Convert to fraction form
    13,121,236.70/18,107,314.35 = 7,320,018.45/x
  3. Step 3: Cross multiply
    13,121,236.70x = 18,107,314.35 × 7,320,018.45
  4. Step 4: Simplify right side
    13,121,236.70x = 132,545,875,121,949.77
  5. Step 5: Solve for x
    x = 132,545,875,121,949.77/13,121,236.70
  6. Step 6: Final answer
    x = 10,101,629.76

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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.