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Finding the Fourth Proportional to 16,695.90, 23,040.62 and 9,142.11

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Solution

The fourth proportional to 16,695.90, 23,040.62 and 9,142.11 is: 12,616.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,695.90 : 23,040.62 = 9,142.11 : x
  2. Step 2: Convert to fraction form
    16,695.90/23,040.62 = 9,142.11/x
  3. Step 3: Cross multiply
    16,695.90x = 23,040.62 × 9,142.11
  4. Step 4: Simplify right side
    16,695.90x = 210,639,836.80
  5. Step 5: Solve for x
    x = 210,639,836.80/16,695.90
  6. Step 6: Final answer
    x = 12,616.26

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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.