Home / 20,974.16-28,944.76-11,542.72

Finding the Fourth Proportional to 20,974.16, 28,944.76 and 11,542.72

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Solution

The fourth proportional to 20,974.16, 28,944.76 and 11,542.72 is: 15,929.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.16 : 28,944.76 = 11,542.72 : x
  2. Step 2: Convert to fraction form
    20,974.16/28,944.76 = 11,542.72/x
  3. Step 3: Cross multiply
    20,974.16x = 28,944.76 × 11,542.72
  4. Step 4: Simplify right side
    20,974.16x = 334,101,260.15
  5. Step 5: Solve for x
    x = 334,101,260.15/20,974.16
  6. Step 6: Final answer
    x = 15,929.18

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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.