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Finding the Fourth Proportional to 16,407.70, 22,642.62 and 8,955.70

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Solution

The fourth proportional to 16,407.70, 22,642.62 and 8,955.70 is: 12,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,407.70 : 22,642.62 = 8,955.70 : x
  2. Step 2: Convert to fraction form
    16,407.70/22,642.62 = 8,955.70/x
  3. Step 3: Cross multiply
    16,407.70x = 22,642.62 × 8,955.70
  4. Step 4: Simplify right side
    16,407.70x = 202,780,511.93
  5. Step 5: Solve for x
    x = 202,780,511.93/16,407.70
  6. Step 6: Final answer
    x = 12,358.86

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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.