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Finding the Fourth Proportional to 25,560, 38,333.61 and 8,917.56

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Solution

The fourth proportional to 25,560, 38,333.61 and 8,917.56 is: 13,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,560 : 38,333.61 = 8,917.56 : x
  2. Step 2: Convert to fraction form
    25,560/38,333.61 = 8,917.56/x
  3. Step 3: Cross multiply
    25,560x = 38,333.61 × 8,917.56
  4. Step 4: Simplify right side
    25,560x = 341,842,267.19
  5. Step 5: Solve for x
    x = 341,842,267.19/25,560
  6. Step 6: Final answer
    x = 13,374.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.