Home / 38,279.77-57,419.66-11,986.57

Finding the Fourth Proportional to 38,279.77, 57,419.66 and 11,986.57

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Solution

The fourth proportional to 38,279.77, 57,419.66 and 11,986.57 is: 17,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,279.77 : 57,419.66 = 11,986.57 : x
  2. Step 2: Convert to fraction form
    38,279.77/57,419.66 = 11,986.57/x
  3. Step 3: Cross multiply
    38,279.77x = 57,419.66 × 11,986.57
  4. Step 4: Simplify right side
    38,279.77x = 688,264,773.97
  5. Step 5: Solve for x
    x = 688,264,773.97/38,279.77
  6. Step 6: Final answer
    x = 17,979.86

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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.