Home / 39,418.16-54,397.22-21,513.56

Finding the Fourth Proportional to 39,418.16, 54,397.22 and 21,513.56

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Solution

The fourth proportional to 39,418.16, 54,397.22 and 21,513.56 is: 29,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,418.16 : 54,397.22 = 21,513.56 : x
  2. Step 2: Convert to fraction form
    39,418.16/54,397.22 = 21,513.56/x
  3. Step 3: Cross multiply
    39,418.16x = 54,397.22 × 21,513.56
  4. Step 4: Simplify right side
    39,418.16x = 1,170,277,884.73
  5. Step 5: Solve for x
    x = 1,170,277,884.73/39,418.16
  6. Step 6: Final answer
    x = 29,688.80

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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.