Home / 20,680.98-31,003.94-9,432.28

Finding the Fourth Proportional to 20,680.98, 31,003.94 and 9,432.28

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Solution

The fourth proportional to 20,680.98, 31,003.94 and 9,432.28 is: 14,140.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.98 : 31,003.94 = 9,432.28 : x
  2. Step 2: Convert to fraction form
    20,680.98/31,003.94 = 9,432.28/x
  3. Step 3: Cross multiply
    20,680.98x = 31,003.94 × 9,432.28
  4. Step 4: Simplify right side
    20,680.98x = 292,437,843.18
  5. Step 5: Solve for x
    x = 292,437,843.18/20,680.98
  6. Step 6: Final answer
    x = 14,140.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.