Home / 39,484.52-54,489.50-21,580.68

Finding the Fourth Proportional to 39,484.52, 54,489.50 and 21,580.68

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Solution

The fourth proportional to 39,484.52, 54,489.50 and 21,580.68 is: 29,781.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,484.52 : 54,489.50 = 21,580.68 : x
  2. Step 2: Convert to fraction form
    39,484.52/54,489.50 = 21,580.68/x
  3. Step 3: Cross multiply
    39,484.52x = 54,489.50 × 21,580.68
  4. Step 4: Simplify right side
    39,484.52x = 1,175,920,435.88
  5. Step 5: Solve for x
    x = 1,175,920,435.88/39,484.52
  6. Step 6: Final answer
    x = 29,781.81

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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.