Home / 20,737.20-28,609.17-12,765.57

Finding the Fourth Proportional to 20,737.20, 28,609.17 and 12,765.57

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Solution

The fourth proportional to 20,737.20, 28,609.17 and 12,765.57 is: 17,611.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.20 : 28,609.17 = 12,765.57 : x
  2. Step 2: Convert to fraction form
    20,737.20/28,609.17 = 12,765.57/x
  3. Step 3: Cross multiply
    20,737.20x = 28,609.17 × 12,765.57
  4. Step 4: Simplify right side
    20,737.20x = 365,212,362.28
  5. Step 5: Solve for x
    x = 365,212,362.28/20,737.20
  6. Step 6: Final answer
    x = 17,611.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.