Home / 39,935.40-59,900.92-13,640.12

Finding the Fourth Proportional to 39,935.40, 59,900.92 and 13,640.12

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Solution

The fourth proportional to 39,935.40, 59,900.92 and 13,640.12 is: 20,459.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,935.40 : 59,900.92 = 13,640.12 : x
  2. Step 2: Convert to fraction form
    39,935.40/59,900.92 = 13,640.12/x
  3. Step 3: Cross multiply
    39,935.40x = 59,900.92 × 13,640.12
  4. Step 4: Simplify right side
    39,935.40x = 817,055,736.91
  5. Step 5: Solve for x
    x = 817,055,736.91/39,935.40
  6. Step 6: Final answer
    x = 20,459.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.