Home / 38,987.06-58,489.84-12,691.82

Finding the Fourth Proportional to 38,987.06, 58,489.84 and 12,691.82

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Solution

The fourth proportional to 38,987.06, 58,489.84 and 12,691.82 is: 19,040.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,987.06 : 58,489.84 = 12,691.82 : x
  2. Step 2: Convert to fraction form
    38,987.06/58,489.84 = 12,691.82/x
  3. Step 3: Cross multiply
    38,987.06x = 58,489.84 × 12,691.82
  4. Step 4: Simplify right side
    38,987.06x = 742,342,521.11
  5. Step 5: Solve for x
    x = 742,342,521.11/38,987.06
  6. Step 6: Final answer
    x = 19,040.74

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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.