Home / 20,798.14-28,704.66-13,247.70

Finding the Fourth Proportional to 20,798.14, 28,704.66 and 13,247.70

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Solution

The fourth proportional to 20,798.14, 28,704.66 and 13,247.70 is: 18,283.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.14 : 28,704.66 = 13,247.70 : x
  2. Step 2: Convert to fraction form
    20,798.14/28,704.66 = 13,247.70/x
  3. Step 3: Cross multiply
    20,798.14x = 28,704.66 × 13,247.70
  4. Step 4: Simplify right side
    20,798.14x = 380,270,724.28
  5. Step 5: Solve for x
    x = 380,270,724.28/20,798.14
  6. Step 6: Final answer
    x = 18,283.88

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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.