Home / 38,987.19-58,488.01-12,339.88

Finding the Fourth Proportional to 38,987.19, 58,488.01 and 12,339.88

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Solution

The fourth proportional to 38,987.19, 58,488.01 and 12,339.88 is: 18,512.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,987.19 : 58,488.01 = 12,339.88 : x
  2. Step 2: Convert to fraction form
    38,987.19/58,488.01 = 12,339.88/x
  3. Step 3: Cross multiply
    38,987.19x = 58,488.01 × 12,339.88
  4. Step 4: Simplify right side
    38,987.19x = 721,735,146.57
  5. Step 5: Solve for x
    x = 721,735,146.57/38,987.19
  6. Step 6: Final answer
    x = 18,512.11

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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.