Home / 15,561.32-21,474.42-8,487.60

Finding the Fourth Proportional to 15,561.32, 21,474.42 and 8,487.60

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Solution

The fourth proportional to 15,561.32, 21,474.42 and 8,487.60 is: 11,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.32 : 21,474.42 = 8,487.60 : x
  2. Step 2: Convert to fraction form
    15,561.32/21,474.42 = 8,487.60/x
  3. Step 3: Cross multiply
    15,561.32x = 21,474.42 × 8,487.60
  4. Step 4: Simplify right side
    15,561.32x = 182,266,287.19
  5. Step 5: Solve for x
    x = 182,266,287.19/15,561.32
  6. Step 6: Final answer
    x = 11,712.78

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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.