Home / 39,440.14-54,426.21-21,535.30

Finding the Fourth Proportional to 39,440.14, 54,426.21 and 21,535.30

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Solution

The fourth proportional to 39,440.14, 54,426.21 and 21,535.30 is: 29,718.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,440.14 : 54,426.21 = 21,535.30 : x
  2. Step 2: Convert to fraction form
    39,440.14/54,426.21 = 21,535.30/x
  3. Step 3: Cross multiply
    39,440.14x = 54,426.21 × 21,535.30
  4. Step 4: Simplify right side
    39,440.14x = 1,172,084,760.21
  5. Step 5: Solve for x
    x = 1,172,084,760.21/39,440.14
  6. Step 6: Final answer
    x = 29,718.07

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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.