Home / 39,418.17-54,397.76-21,513.35

Finding the Fourth Proportional to 39,418.17, 54,397.76 and 21,513.35

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Solution

The fourth proportional to 39,418.17, 54,397.76 and 21,513.35 is: 29,688.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,418.17 : 54,397.76 = 21,513.35 : x
  2. Step 2: Convert to fraction form
    39,418.17/54,397.76 = 21,513.35/x
  3. Step 3: Cross multiply
    39,418.17x = 54,397.76 × 21,513.35
  4. Step 4: Simplify right side
    39,418.17x = 1,170,277,670.54
  5. Step 5: Solve for x
    x = 1,170,277,670.54/39,418.17
  6. Step 6: Final answer
    x = 29,688.79

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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.