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Finding the Fourth Proportional to 17,280.86, 25,920.18 and 8,508.02

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Solution

The fourth proportional to 17,280.86, 25,920.18 and 8,508.02 is: 12,761.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,280.86 : 25,920.18 = 8,508.02 : x
  2. Step 2: Convert to fraction form
    17,280.86/25,920.18 = 8,508.02/x
  3. Step 3: Cross multiply
    17,280.86x = 25,920.18 × 8,508.02
  4. Step 4: Simplify right side
    17,280.86x = 220,529,280.24
  5. Step 5: Solve for x
    x = 220,529,280.24/17,280.86
  6. Step 6: Final answer
    x = 12,761.48

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1.5x scale

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.