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Finding the Fourth Proportional to 25,647.52, 38,476.86 and 8,117.50

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Solution

The fourth proportional to 25,647.52, 38,476.86 and 8,117.50 is: 12,178.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,647.52 : 38,476.86 = 8,117.50 : x
  2. Step 2: Convert to fraction form
    25,647.52/38,476.86 = 8,117.50/x
  3. Step 3: Cross multiply
    25,647.52x = 38,476.86 × 8,117.50
  4. Step 4: Simplify right side
    25,647.52x = 312,335,911.05
  5. Step 5: Solve for x
    x = 312,335,911.05/25,647.52
  6. Step 6: Final answer
    x = 12,178.02

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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.