Home / 20,426.85-30,652.52-8,740.08

Finding the Fourth Proportional to 20,426.85, 30,652.52 and 8,740.08

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Solution

The fourth proportional to 20,426.85, 30,652.52 and 8,740.08 is: 13,115.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.85 : 30,652.52 = 8,740.08 : x
  2. Step 2: Convert to fraction form
    20,426.85/30,652.52 = 8,740.08/x
  3. Step 3: Cross multiply
    20,426.85x = 30,652.52 × 8,740.08
  4. Step 4: Simplify right side
    20,426.85x = 267,905,433.30
  5. Step 5: Solve for x
    x = 267,905,433.30/20,426.85
  6. Step 6: Final answer
    x = 13,115.36

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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.