Home / 20,449.53-28,219.95-11,374.70

Finding the Fourth Proportional to 20,449.53, 28,219.95 and 11,374.70

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Solution

The fourth proportional to 20,449.53, 28,219.95 and 11,374.70 is: 15,696.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.53 : 28,219.95 = 11,374.70 : x
  2. Step 2: Convert to fraction form
    20,449.53/28,219.95 = 11,374.70/x
  3. Step 3: Cross multiply
    20,449.53x = 28,219.95 × 11,374.70
  4. Step 4: Simplify right side
    20,449.53x = 320,993,456.45
  5. Step 5: Solve for x
    x = 320,993,456.45/20,449.53
  6. Step 6: Final answer
    x = 15,696.86

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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.