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Finding the Fourth Proportional to 15,562.74, 21,476.57 and 8,489.16

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Solution

The fourth proportional to 15,562.74, 21,476.57 and 8,489.16 is: 11,715.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,562.74 : 21,476.57 = 8,489.16 : x
  2. Step 2: Convert to fraction form
    15,562.74/21,476.57 = 8,489.16/x
  3. Step 3: Cross multiply
    15,562.74x = 21,476.57 × 8,489.16
  4. Step 4: Simplify right side
    15,562.74x = 182,318,038.98
  5. Step 5: Solve for x
    x = 182,318,038.98/15,562.74
  6. Step 6: Final answer
    x = 11,715.03

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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.