Home / 39,397.97-54,369.21-21,493.05

Finding the Fourth Proportional to 39,397.97, 54,369.21 and 21,493.05

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Solution

The fourth proportional to 39,397.97, 54,369.21 and 21,493.05 is: 29,660.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,397.97 : 54,369.21 = 21,493.05 : x
  2. Step 2: Convert to fraction form
    39,397.97/54,369.21 = 21,493.05/x
  3. Step 3: Cross multiply
    39,397.97x = 54,369.21 × 21,493.05
  4. Step 4: Simplify right side
    39,397.97x = 1,168,560,148.99
  5. Step 5: Solve for x
    x = 1,168,560,148.99/39,397.97
  6. Step 6: Final answer
    x = 29,660.42

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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.