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Finding the Fourth Proportional to 15,152.90, 20,901.24 and 9,782.18

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Solution

The fourth proportional to 15,152.90, 20,901.24 and 9,782.18 is: 13,493.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.90 : 20,901.24 = 9,782.18 : x
  2. Step 2: Convert to fraction form
    15,152.90/20,901.24 = 9,782.18/x
  3. Step 3: Cross multiply
    15,152.90x = 20,901.24 × 9,782.18
  4. Step 4: Simplify right side
    15,152.90x = 204,459,691.90
  5. Step 5: Solve for x
    x = 204,459,691.90/15,152.90
  6. Step 6: Final answer
    x = 13,493.11

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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.