Home / 39,658.74-54,728.11-21,753.58

Finding the Fourth Proportional to 39,658.74, 54,728.11 and 21,753.58

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Solution

The fourth proportional to 39,658.74, 54,728.11 and 21,753.58 is: 30,019.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.74 : 54,728.11 = 21,753.58 : x
  2. Step 2: Convert to fraction form
    39,658.74/54,728.11 = 21,753.58/x
  3. Step 3: Cross multiply
    39,658.74x = 54,728.11 × 21,753.58
  4. Step 4: Simplify right side
    39,658.74x = 1,190,532,319.13
  5. Step 5: Solve for x
    x = 1,190,532,319.13/39,658.74
  6. Step 6: Final answer
    x = 30,019.42

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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.