Home / 20,473.11-28,248.62-11,520.99

Finding the Fourth Proportional to 20,473.11, 28,248.62 and 11,520.99

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Solution

The fourth proportional to 20,473.11, 28,248.62 and 11,520.99 is: 15,896.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.11 : 28,248.62 = 11,520.99 : x
  2. Step 2: Convert to fraction form
    20,473.11/28,248.62 = 11,520.99/x
  3. Step 3: Cross multiply
    20,473.11x = 28,248.62 × 11,520.99
  4. Step 4: Simplify right side
    20,473.11x = 325,452,010.93
  5. Step 5: Solve for x
    x = 325,452,010.93/20,473.11
  6. Step 6: Final answer
    x = 15,896.56

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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.