Home / 12,657.11-18,987.48-3,892.76

Finding the Fourth Proportional to 12,657.11, 18,987.48 and 3,892.76

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Solution

The fourth proportional to 12,657.11, 18,987.48 and 3,892.76 is: 5,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.11 : 18,987.48 = 3,892.76 : x
  2. Step 2: Convert to fraction form
    12,657.11/18,987.48 = 3,892.76/x
  3. Step 3: Cross multiply
    12,657.11x = 18,987.48 × 3,892.76
  4. Step 4: Simplify right side
    12,657.11x = 73,913,702.64
  5. Step 5: Solve for x
    x = 73,913,702.64/12,657.11
  6. Step 6: Final answer
    x = 5,839.70

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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.