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Finding the Fourth Proportional to 16,750.92, 23,120.46 and 9,681.78

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Solution

The fourth proportional to 16,750.92, 23,120.46 and 9,681.78 is: 13,363.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,750.92 : 23,120.46 = 9,681.78 : x
  2. Step 2: Convert to fraction form
    16,750.92/23,120.46 = 9,681.78/x
  3. Step 3: Cross multiply
    16,750.92x = 23,120.46 × 9,681.78
  4. Step 4: Simplify right side
    16,750.92x = 223,847,207.22
  5. Step 5: Solve for x
    x = 223,847,207.22/16,750.92
  6. Step 6: Final answer
    x = 13,363.28

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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.