Home / 12,531.60-18,782.28-5,859

Finding the Fourth Proportional to 12,531.60, 18,782.28 and 5,859

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Solution

The fourth proportional to 12,531.60, 18,782.28 and 5,859 is: 8,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.60 : 18,782.28 = 5,859 : x
  2. Step 2: Convert to fraction form
    12,531.60/18,782.28 = 5,859/x
  3. Step 3: Cross multiply
    12,531.60x = 18,782.28 × 5,859
  4. Step 4: Simplify right side
    12,531.60x = 110,045,378.52
  5. Step 5: Solve for x
    x = 110,045,378.52/12,531.60
  6. Step 6: Final answer
    x = 8,781.43

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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.