Home / 20,473.15-28,253.49-11,520.97

Finding the Fourth Proportional to 20,473.15, 28,253.49 and 11,520.97

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Solution

The fourth proportional to 20,473.15, 28,253.49 and 11,520.97 is: 15,899.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.15 : 28,253.49 = 11,520.97 : x
  2. Step 2: Convert to fraction form
    20,473.15/28,253.49 = 11,520.97/x
  3. Step 3: Cross multiply
    20,473.15x = 28,253.49 × 11,520.97
  4. Step 4: Simplify right side
    20,473.15x = 325,507,610.69
  5. Step 5: Solve for x
    x = 325,507,610.69/20,473.15
  6. Step 6: Final answer
    x = 15,899.24

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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.