Home / 16,972.20-23,420.43-9,418.85

Finding the Fourth Proportional to 16,972.20, 23,420.43 and 9,418.85

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Solution

The fourth proportional to 16,972.20, 23,420.43 and 9,418.85 is: 12,997.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,972.20 : 23,420.43 = 9,418.85 : x
  2. Step 2: Convert to fraction form
    16,972.20/23,420.43 = 9,418.85/x
  3. Step 3: Cross multiply
    16,972.20x = 23,420.43 × 9,418.85
  4. Step 4: Simplify right side
    16,972.20x = 220,593,583.59
  5. Step 5: Solve for x
    x = 220,593,583.59/16,972.20
  6. Step 6: Final answer
    x = 12,997.35

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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.