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Finding the Fourth Proportional to 15,159.28, 20,917.32 and 8,444.74

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Solution

The fourth proportional to 15,159.28, 20,917.32 and 8,444.74 is: 11,652.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,159.28 : 20,917.32 = 8,444.74 : x
  2. Step 2: Convert to fraction form
    15,159.28/20,917.32 = 8,444.74/x
  3. Step 3: Cross multiply
    15,159.28x = 20,917.32 × 8,444.74
  4. Step 4: Simplify right side
    15,159.28x = 176,641,328.90
  5. Step 5: Solve for x
    x = 176,641,328.90/15,159.28
  6. Step 6: Final answer
    x = 11,652.36

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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.