Home / 20,660.40-28,514.52-11,708.82

Finding the Fourth Proportional to 20,660.40, 28,514.52 and 11,708.82

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Solution

The fourth proportional to 20,660.40, 28,514.52 and 11,708.82 is: 16,159.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.40 : 28,514.52 = 11,708.82 : x
  2. Step 2: Convert to fraction form
    20,660.40/28,514.52 = 11,708.82/x
  3. Step 3: Cross multiply
    20,660.40x = 28,514.52 × 11,708.82
  4. Step 4: Simplify right side
    20,660.40x = 333,871,382.07
  5. Step 5: Solve for x
    x = 333,871,382.07/20,660.40
  6. Step 6: Final answer
    x = 16,159.97

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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.