Home / 20,659.43-28,510.19-11,227.98

Finding the Fourth Proportional to 20,659.43, 28,510.19 and 11,227.98

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Solution

The fourth proportional to 20,659.43, 28,510.19 and 11,227.98 is: 15,494.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.43 : 28,510.19 = 11,227.98 : x
  2. Step 2: Convert to fraction form
    20,659.43/28,510.19 = 11,227.98/x
  3. Step 3: Cross multiply
    20,659.43x = 28,510.19 × 11,227.98
  4. Step 4: Simplify right side
    20,659.43x = 320,111,786.98
  5. Step 5: Solve for x
    x = 320,111,786.98/20,659.43
  6. Step 6: Final answer
    x = 15,494.71

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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.