Home / 16,978.30-23,428.12-9,422.66

Finding the Fourth Proportional to 16,978.30, 23,428.12 and 9,422.66

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Solution

The fourth proportional to 16,978.30, 23,428.12 and 9,422.66 is: 13,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,978.30 : 23,428.12 = 9,422.66 : x
  2. Step 2: Convert to fraction form
    16,978.30/23,428.12 = 9,422.66/x
  3. Step 3: Cross multiply
    16,978.30x = 23,428.12 × 9,422.66
  4. Step 4: Simplify right side
    16,978.30x = 220,755,209.20
  5. Step 5: Solve for x
    x = 220,755,209.20/16,978.30
  6. Step 6: Final answer
    x = 13,002.20

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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.