Home / 20,538.22-30,811.12-6,501.78

Finding the Fourth Proportional to 20,538.22, 30,811.12 and 6,501.78

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Solution

The fourth proportional to 20,538.22, 30,811.12 and 6,501.78 is: 9,753.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.22 : 30,811.12 = 6,501.78 : x
  2. Step 2: Convert to fraction form
    20,538.22/30,811.12 = 6,501.78/x
  3. Step 3: Cross multiply
    20,538.22x = 30,811.12 × 6,501.78
  4. Step 4: Simplify right side
    20,538.22x = 200,327,123.79
  5. Step 5: Solve for x
    x = 200,327,123.79/20,538.22
  6. Step 6: Final answer
    x = 9,753.87

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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.