Home / 20,659.06-28,508.70-11,227.42

Finding the Fourth Proportional to 20,659.06, 28,508.70 and 11,227.42

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Solution

The fourth proportional to 20,659.06, 28,508.70 and 11,227.42 is: 15,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.06 : 28,508.70 = 11,227.42 : x
  2. Step 2: Convert to fraction form
    20,659.06/28,508.70 = 11,227.42/x
  3. Step 3: Cross multiply
    20,659.06x = 28,508.70 × 11,227.42
  4. Step 4: Simplify right side
    20,659.06x = 320,079,148.55
  5. Step 5: Solve for x
    x = 320,079,148.55/20,659.06
  6. Step 6: Final answer
    x = 15,493.40

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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.