Home / 20,881.47-28,816.24-11,449.83

Finding the Fourth Proportional to 20,881.47, 28,816.24 and 11,449.83

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Solution

The fourth proportional to 20,881.47, 28,816.24 and 11,449.83 is: 15,800.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.47 : 28,816.24 = 11,449.83 : x
  2. Step 2: Convert to fraction form
    20,881.47/28,816.24 = 11,449.83/x
  3. Step 3: Cross multiply
    20,881.47x = 28,816.24 × 11,449.83
  4. Step 4: Simplify right side
    20,881.47x = 329,941,049.24
  5. Step 5: Solve for x
    x = 329,941,049.24/20,881.47
  6. Step 6: Final answer
    x = 15,800.66

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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.