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Finding the Fourth Proportional to 15,059.92, 20,782.74 and 8,345.66

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Solution

The fourth proportional to 15,059.92, 20,782.74 and 8,345.66 is: 11,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.92 : 20,782.74 = 8,345.66 : x
  2. Step 2: Convert to fraction form
    15,059.92/20,782.74 = 8,345.66/x
  3. Step 3: Cross multiply
    15,059.92x = 20,782.74 × 8,345.66
  4. Step 4: Simplify right side
    15,059.92x = 173,445,655.93
  5. Step 5: Solve for x
    x = 173,445,655.93/15,059.92
  6. Step 6: Final answer
    x = 11,517.04

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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.