Home / 38,287.59-57,431.37-11,994.38

Finding the Fourth Proportional to 38,287.59, 57,431.37 and 11,994.38

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Solution

The fourth proportional to 38,287.59, 57,431.37 and 11,994.38 is: 17,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,287.59 : 57,431.37 = 11,994.38 : x
  2. Step 2: Convert to fraction form
    38,287.59/57,431.37 = 11,994.38/x
  3. Step 3: Cross multiply
    38,287.59x = 57,431.37 × 11,994.38
  4. Step 4: Simplify right side
    38,287.59x = 688,853,675.70
  5. Step 5: Solve for x
    x = 688,853,675.70/38,287.59
  6. Step 6: Final answer
    x = 17,991.57

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Half scale
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Double scale
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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.