Home / 38,776.12-58,164.18-12,480.86

Finding the Fourth Proportional to 38,776.12, 58,164.18 and 12,480.86

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Solution

The fourth proportional to 38,776.12, 58,164.18 and 12,480.86 is: 18,721.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,776.12 : 58,164.18 = 12,480.86 : x
  2. Step 2: Convert to fraction form
    38,776.12/58,164.18 = 12,480.86/x
  3. Step 3: Cross multiply
    38,776.12x = 58,164.18 × 12,480.86
  4. Step 4: Simplify right side
    38,776.12x = 725,938,987.59
  5. Step 5: Solve for x
    x = 725,938,987.59/38,776.12
  6. Step 6: Final answer
    x = 18,721.29

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.