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Finding the Fourth Proportional to 39,398.27, 54,368.54 and 21,493.27

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Solution

The fourth proportional to 39,398.27, 54,368.54 and 21,493.27 is: 29,660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,398.27 : 54,368.54 = 21,493.27 : x
  2. Step 2: Convert to fraction form
    39,398.27/54,368.54 = 21,493.27/x
  3. Step 3: Cross multiply
    39,398.27x = 54,368.54 × 21,493.27
  4. Step 4: Simplify right side
    39,398.27x = 1,168,557,598.80
  5. Step 5: Solve for x
    x = 1,168,557,598.80/39,398.27
  6. Step 6: Final answer
    x = 29,660.13

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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.