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Finding the Fourth Proportional to 15,549.16, 21,458.12 and 8,475.88

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Solution

The fourth proportional to 15,549.16, 21,458.12 and 8,475.88 is: 11,696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.16 : 21,458.12 = 8,475.88 : x
  2. Step 2: Convert to fraction form
    15,549.16/21,458.12 = 8,475.88/x
  3. Step 3: Cross multiply
    15,549.16x = 21,458.12 × 8,475.88
  4. Step 4: Simplify right side
    15,549.16x = 181,876,450.15
  5. Step 5: Solve for x
    x = 181,876,450.15/15,549.16
  6. Step 6: Final answer
    x = 11,696.87

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