Home / 39,329.81-54,276.11-21,425.76

Finding the Fourth Proportional to 39,329.81, 54,276.11 and 21,425.76

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Solution

The fourth proportional to 39,329.81, 54,276.11 and 21,425.76 is: 29,568.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,329.81 : 54,276.11 = 21,425.76 : x
  2. Step 2: Convert to fraction form
    39,329.81/54,276.11 = 21,425.76/x
  3. Step 3: Cross multiply
    39,329.81x = 54,276.11 × 21,425.76
  4. Step 4: Simplify right side
    39,329.81x = 1,162,906,906.59
  5. Step 5: Solve for x
    x = 1,162,906,906.59/39,329.81
  6. Step 6: Final answer
    x = 29,568.08

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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.