Home / 20,786.24-28,675.02-15,112.19

Finding the Fourth Proportional to 20,786.24, 28,675.02 and 15,112.19

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Solution

The fourth proportional to 20,786.24, 28,675.02 and 15,112.19 is: 20,847.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.24 : 28,675.02 = 15,112.19 : x
  2. Step 2: Convert to fraction form
    20,786.24/28,675.02 = 15,112.19/x
  3. Step 3: Cross multiply
    20,786.24x = 28,675.02 × 15,112.19
  4. Step 4: Simplify right side
    20,786.24x = 433,342,350.49
  5. Step 5: Solve for x
    x = 433,342,350.49/20,786.24
  6. Step 6: Final answer
    x = 20,847.56

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Double scale
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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.