Home / 39,340.28-54,287.64-21,434.21

Finding the Fourth Proportional to 39,340.28, 54,287.64 and 21,434.21

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Solution

The fourth proportional to 39,340.28, 54,287.64 and 21,434.21 is: 29,578.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,340.28 : 54,287.64 = 21,434.21 : x
  2. Step 2: Convert to fraction form
    39,340.28/54,287.64 = 21,434.21/x
  3. Step 3: Cross multiply
    39,340.28x = 54,287.64 × 21,434.21
  4. Step 4: Simplify right side
    39,340.28x = 1,163,612,404.73
  5. Step 5: Solve for x
    x = 1,163,612,404.73/39,340.28
  6. Step 6: Final answer
    x = 29,578.15

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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.