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Finding the Fourth Proportional to 15,165.40, 20,934.26 and 13,032.47

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Solution

The fourth proportional to 15,165.40, 20,934.26 and 13,032.47 is: 17,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.40 : 20,934.26 = 13,032.47 : x
  2. Step 2: Convert to fraction form
    15,165.40/20,934.26 = 13,032.47/x
  3. Step 3: Cross multiply
    15,165.40x = 20,934.26 × 13,032.47
  4. Step 4: Simplify right side
    15,165.40x = 272,825,115.42
  5. Step 5: Solve for x
    x = 272,825,115.42/15,165.40
  6. Step 6: Final answer
    x = 17,989.97

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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.