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Finding the Fourth Proportional to 15,559.82, 21,472.64 and 8,486.36

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Solution

The fourth proportional to 15,559.82, 21,472.64 and 8,486.36 is: 11,711.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,559.82 : 21,472.64 = 8,486.36 : x
  2. Step 2: Convert to fraction form
    15,559.82/21,472.64 = 8,486.36/x
  3. Step 3: Cross multiply
    15,559.82x = 21,472.64 × 8,486.36
  4. Step 4: Simplify right side
    15,559.82x = 182,224,553.19
  5. Step 5: Solve for x
    x = 182,224,553.19/15,559.82
  6. Step 6: Final answer
    x = 11,711.23

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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.