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Finding the Fourth Proportional to 8,806.61, 13,124.13 and 8,539.61

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Solution

The fourth proportional to 8,806.61, 13,124.13 and 8,539.61 is: 12,726.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.61 : 13,124.13 = 8,539.61 : x
  2. Step 2: Convert to fraction form
    8,806.61/13,124.13 = 8,539.61/x
  3. Step 3: Cross multiply
    8,806.61x = 13,124.13 × 8,539.61
  4. Step 4: Simplify right side
    8,806.61x = 112,074,886.17
  5. Step 5: Solve for x
    x = 112,074,886.17/8,806.61
  6. Step 6: Final answer
    x = 12,726.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.