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Finding the Fourth Proportional to 17,812.98, 26,725.95 and 8,455.86

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Solution

The fourth proportional to 17,812.98, 26,725.95 and 8,455.86 is: 12,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,812.98 : 26,725.95 = 8,455.86 : x
  2. Step 2: Convert to fraction form
    17,812.98/26,725.95 = 8,455.86/x
  3. Step 3: Cross multiply
    17,812.98x = 26,725.95 × 8,455.86
  4. Step 4: Simplify right side
    17,812.98x = 225,990,891.57
  5. Step 5: Solve for x
    x = 225,990,891.57/17,812.98
  6. Step 6: Final answer
    x = 12,686.87

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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.