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Finding the Fourth Proportional to 16,659.68, 22,990.38 and 9,207.68

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Solution

The fourth proportional to 16,659.68, 22,990.38 and 9,207.68 is: 12,706.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,659.68 : 22,990.38 = 9,207.68 : x
  2. Step 2: Convert to fraction form
    16,659.68/22,990.38 = 9,207.68/x
  3. Step 3: Cross multiply
    16,659.68x = 22,990.38 × 9,207.68
  4. Step 4: Simplify right side
    16,659.68x = 211,688,062.12
  5. Step 5: Solve for x
    x = 211,688,062.12/16,659.68
  6. Step 6: Final answer
    x = 12,706.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.