Home / 20,971.59-31,468.31-8,500.83

Finding the Fourth Proportional to 20,971.59, 31,468.31 and 8,500.83

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Solution

The fourth proportional to 20,971.59, 31,468.31 and 8,500.83 is: 12,755.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.59 : 31,468.31 = 8,500.83 : x
  2. Step 2: Convert to fraction form
    20,971.59/31,468.31 = 8,500.83/x
  3. Step 3: Cross multiply
    20,971.59x = 31,468.31 × 8,500.83
  4. Step 4: Simplify right side
    20,971.59x = 267,506,753.70
  5. Step 5: Solve for x
    x = 267,506,753.70/20,971.59
  6. Step 6: Final answer
    x = 12,755.67

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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.