Home / 39,440.66-54,428.21-21,535.70

Finding the Fourth Proportional to 39,440.66, 54,428.21 and 21,535.70

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Solution

The fourth proportional to 39,440.66, 54,428.21 and 21,535.70 is: 29,719.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,440.66 : 54,428.21 = 21,535.70 : x
  2. Step 2: Convert to fraction form
    39,440.66/54,428.21 = 21,535.70/x
  3. Step 3: Cross multiply
    39,440.66x = 54,428.21 × 21,535.70
  4. Step 4: Simplify right side
    39,440.66x = 1,172,149,602.10
  5. Step 5: Solve for x
    x = 1,172,149,602.10/39,440.66
  6. Step 6: Final answer
    x = 29,719.32

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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.