Home / 20,449.49-28,219.57-11,374.80

Finding the Fourth Proportional to 20,449.49, 28,219.57 and 11,374.80

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Solution

The fourth proportional to 20,449.49, 28,219.57 and 11,374.80 is: 15,696.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.49 : 28,219.57 = 11,374.80 : x
  2. Step 2: Convert to fraction form
    20,449.49/28,219.57 = 11,374.80/x
  3. Step 3: Cross multiply
    20,449.49x = 28,219.57 × 11,374.80
  4. Step 4: Simplify right side
    20,449.49x = 320,991,964.84
  5. Step 5: Solve for x
    x = 320,991,964.84/20,449.49
  6. Step 6: Final answer
    x = 15,696.82

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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.