Home / 15,613.32-21,546.56-8,539.59

Finding the Fourth Proportional to 15,613.32, 21,546.56 and 8,539.59

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Solution

The fourth proportional to 15,613.32, 21,546.56 and 8,539.59 is: 11,784.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.32 : 21,546.56 = 8,539.59 : x
  2. Step 2: Convert to fraction form
    15,613.32/21,546.56 = 8,539.59/x
  3. Step 3: Cross multiply
    15,613.32x = 21,546.56 × 8,539.59
  4. Step 4: Simplify right side
    15,613.32x = 183,998,842.42
  5. Step 5: Solve for x
    x = 183,998,842.42/15,613.32
  6. Step 6: Final answer
    x = 11,784.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.