Home / 15,454.21-21,320.78-10,082.97

Finding the Fourth Proportional to 15,454.21, 21,320.78 and 10,082.97

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Solution

The fourth proportional to 15,454.21, 21,320.78 and 10,082.97 is: 13,910.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.21 : 21,320.78 = 10,082.97 : x
  2. Step 2: Convert to fraction form
    15,454.21/21,320.78 = 10,082.97/x
  3. Step 3: Cross multiply
    15,454.21x = 21,320.78 × 10,082.97
  4. Step 4: Simplify right side
    15,454.21x = 214,976,785.12
  5. Step 5: Solve for x
    x = 214,976,785.12/15,454.21
  6. Step 6: Final answer
    x = 13,910.56

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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.