Home / 20,793.06-28,697.13-11,838.78

Finding the Fourth Proportional to 20,793.06, 28,697.13 and 11,838.78

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Solution

The fourth proportional to 20,793.06, 28,697.13 and 11,838.78 is: 16,339.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.06 : 28,697.13 = 11,838.78 : x
  2. Step 2: Convert to fraction form
    20,793.06/28,697.13 = 11,838.78/x
  3. Step 3: Cross multiply
    20,793.06x = 28,697.13 × 11,838.78
  4. Step 4: Simplify right side
    20,793.06x = 339,739,008.70
  5. Step 5: Solve for x
    x = 339,739,008.70/20,793.06
  6. Step 6: Final answer
    x = 16,339.06

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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.