Home / 20,182.28-30,278.54-6,331.40

Finding the Fourth Proportional to 20,182.28, 30,278.54 and 6,331.40

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Solution

The fourth proportional to 20,182.28, 30,278.54 and 6,331.40 is: 9,498.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,182.28 : 30,278.54 = 6,331.40 : x
  2. Step 2: Convert to fraction form
    20,182.28/30,278.54 = 6,331.40/x
  3. Step 3: Cross multiply
    20,182.28x = 30,278.54 × 6,331.40
  4. Step 4: Simplify right side
    20,182.28x = 191,705,548.16
  5. Step 5: Solve for x
    x = 191,705,548.16/20,182.28
  6. Step 6: Final answer
    x = 9,498.71

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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.