Home / 20,648.46-28,500.50-12,153.31

Finding the Fourth Proportional to 20,648.46, 28,500.50 and 12,153.31

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Solution

The fourth proportional to 20,648.46, 28,500.50 and 12,153.31 is: 16,774.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.46 : 28,500.50 = 12,153.31 : x
  2. Step 2: Convert to fraction form
    20,648.46/28,500.50 = 12,153.31/x
  3. Step 3: Cross multiply
    20,648.46x = 28,500.50 × 12,153.31
  4. Step 4: Simplify right side
    20,648.46x = 346,375,370.79
  5. Step 5: Solve for x
    x = 346,375,370.79/20,648.46
  6. Step 6: Final answer
    x = 16,774.88

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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.