Home / 20,550.50-28,356.85-11,474.76

Finding the Fourth Proportional to 20,550.50, 28,356.85 and 11,474.76

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Solution

The fourth proportional to 20,550.50, 28,356.85 and 11,474.76 is: 15,833.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.50 : 28,356.85 = 11,474.76 : x
  2. Step 2: Convert to fraction form
    20,550.50/28,356.85 = 11,474.76/x
  3. Step 3: Cross multiply
    20,550.50x = 28,356.85 × 11,474.76
  4. Step 4: Simplify right side
    20,550.50x = 325,387,881.12
  5. Step 5: Solve for x
    x = 325,387,881.12/20,550.50
  6. Step 6: Final answer
    x = 15,833.57

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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.