Home / 20,348.74-28,079.90-11,273.49

Finding the Fourth Proportional to 20,348.74, 28,079.90 and 11,273.49

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Solution

The fourth proportional to 20,348.74, 28,079.90 and 11,273.49 is: 15,556.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.74 : 28,079.90 = 11,273.49 : x
  2. Step 2: Convert to fraction form
    20,348.74/28,079.90 = 11,273.49/x
  3. Step 3: Cross multiply
    20,348.74x = 28,079.90 × 11,273.49
  4. Step 4: Simplify right side
    20,348.74x = 316,558,471.85
  5. Step 5: Solve for x
    x = 316,558,471.85/20,348.74
  6. Step 6: Final answer
    x = 15,556.66

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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.