Home / 15,531.64-23,279.22-8,139.58

Finding the Fourth Proportional to 15,531.64, 23,279.22 and 8,139.58

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Solution

The fourth proportional to 15,531.64, 23,279.22 and 8,139.58 is: 12,199.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.64 : 23,279.22 = 8,139.58 : x
  2. Step 2: Convert to fraction form
    15,531.64/23,279.22 = 8,139.58/x
  3. Step 3: Cross multiply
    15,531.64x = 23,279.22 × 8,139.58
  4. Step 4: Simplify right side
    15,531.64x = 189,483,073.53
  5. Step 5: Solve for x
    x = 189,483,073.53/15,531.64
  6. Step 6: Final answer
    x = 12,199.81

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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.