Home / 39,160.74-54,042.22-21,255.90

Finding the Fourth Proportional to 39,160.74, 54,042.22 and 21,255.90

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Solution

The fourth proportional to 39,160.74, 54,042.22 and 21,255.90 is: 29,333.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,160.74 : 54,042.22 = 21,255.90 : x
  2. Step 2: Convert to fraction form
    39,160.74/54,042.22 = 21,255.90/x
  3. Step 3: Cross multiply
    39,160.74x = 54,042.22 × 21,255.90
  4. Step 4: Simplify right side
    39,160.74x = 1,148,716,024.10
  5. Step 5: Solve for x
    x = 1,148,716,024.10/39,160.74
  6. Step 6: Final answer
    x = 29,333.36

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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.