Home / 20,683.12-31,023.92-8,996.40

Finding the Fourth Proportional to 20,683.12, 31,023.92 and 8,996.40

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Solution

The fourth proportional to 20,683.12, 31,023.92 and 8,996.40 is: 13,494.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.12 : 31,023.92 = 8,996.40 : x
  2. Step 2: Convert to fraction form
    20,683.12/31,023.92 = 8,996.40/x
  3. Step 3: Cross multiply
    20,683.12x = 31,023.92 × 8,996.40
  4. Step 4: Simplify right side
    20,683.12x = 279,103,593.89
  5. Step 5: Solve for x
    x = 279,103,593.89/20,683.12
  6. Step 6: Final answer
    x = 13,494.27

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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.