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Finding the Fourth Proportional to 22,516.56, 31,066.44 and 15,445.20

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Solution

The fourth proportional to 22,516.56, 31,066.44 and 15,445.20 is: 21,309.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,516.56 : 31,066.44 = 15,445.20 : x
  2. Step 2: Convert to fraction form
    22,516.56/31,066.44 = 15,445.20/x
  3. Step 3: Cross multiply
    22,516.56x = 31,066.44 × 15,445.20
  4. Step 4: Simplify right side
    22,516.56x = 479,827,379.09
  5. Step 5: Solve for x
    x = 479,827,379.09/22,516.56
  6. Step 6: Final answer
    x = 21,309.98

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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.