Home / 20,371.16-28,113.01-11,418.59

Finding the Fourth Proportional to 20,371.16, 28,113.01 and 11,418.59

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Solution

The fourth proportional to 20,371.16, 28,113.01 and 11,418.59 is: 15,758.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.16 : 28,113.01 = 11,418.59 : x
  2. Step 2: Convert to fraction form
    20,371.16/28,113.01 = 11,418.59/x
  3. Step 3: Cross multiply
    20,371.16x = 28,113.01 × 11,418.59
  4. Step 4: Simplify right side
    20,371.16x = 321,010,976.59
  5. Step 5: Solve for x
    x = 321,010,976.59/20,371.16
  6. Step 6: Final answer
    x = 15,758.11

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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.