Home / 71,427.60-107,132.76-18,841.32

Finding the Fourth Proportional to 71,427.60, 107,132.76 and 18,841.32

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Solution

The fourth proportional to 71,427.60, 107,132.76 and 18,841.32 is: 28,259.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,427.60 : 107,132.76 = 18,841.32 : x
  2. Step 2: Convert to fraction form
    71,427.60/107,132.76 = 18,841.32/x
  3. Step 3: Cross multiply
    71,427.60x = 107,132.76 × 18,841.32
  4. Step 4: Simplify right side
    71,427.60x = 2,018,522,613.64
  5. Step 5: Solve for x
    x = 2,018,522,613.64/71,427.60
  6. Step 6: Final answer
    x = 28,259.70

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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.