Home / 20,425.32-30,648.24-9,331.02

Finding the Fourth Proportional to 20,425.32, 30,648.24 and 9,331.02

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Solution

The fourth proportional to 20,425.32, 30,648.24 and 9,331.02 is: 14,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.32 : 30,648.24 = 9,331.02 : x
  2. Step 2: Convert to fraction form
    20,425.32/30,648.24 = 9,331.02/x
  3. Step 3: Cross multiply
    20,425.32x = 30,648.24 × 9,331.02
  4. Step 4: Simplify right side
    20,425.32x = 285,979,340.40
  5. Step 5: Solve for x
    x = 285,979,340.40/20,425.32
  6. Step 6: Final answer
    x = 14,001.22

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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.