Home / 20,738.64-28,633.19-15,949.92

Finding the Fourth Proportional to 20,738.64, 28,633.19 and 15,949.92

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Solution

The fourth proportional to 20,738.64, 28,633.19 and 15,949.92 is: 22,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.64 : 28,633.19 = 15,949.92 : x
  2. Step 2: Convert to fraction form
    20,738.64/28,633.19 = 15,949.92/x
  3. Step 3: Cross multiply
    20,738.64x = 28,633.19 × 15,949.92
  4. Step 4: Simplify right side
    20,738.64x = 456,697,010.10
  5. Step 5: Solve for x
    x = 456,697,010.10/20,738.64
  6. Step 6: Final answer
    x = 22,021.55

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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.