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Finding the Fourth Proportional to 16,959.11, 23,401.38 and 9,405.38

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Solution

The fourth proportional to 16,959.11, 23,401.38 and 9,405.38 is: 12,978.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,959.11 : 23,401.38 = 9,405.38 : x
  2. Step 2: Convert to fraction form
    16,959.11/23,401.38 = 9,405.38/x
  3. Step 3: Cross multiply
    16,959.11x = 23,401.38 × 9,405.38
  4. Step 4: Simplify right side
    16,959.11x = 220,098,871.42
  5. Step 5: Solve for x
    x = 220,098,871.42/16,959.11
  6. Step 6: Final answer
    x = 12,978.21

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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.