Home / 20,392.56-28,127.52-13,327.20

Finding the Fourth Proportional to 20,392.56, 28,127.52 and 13,327.20

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Solution

The fourth proportional to 20,392.56, 28,127.52 and 13,327.20 is: 18,382.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.56 : 28,127.52 = 13,327.20 : x
  2. Step 2: Convert to fraction form
    20,392.56/28,127.52 = 13,327.20/x
  3. Step 3: Cross multiply
    20,392.56x = 28,127.52 × 13,327.20
  4. Step 4: Simplify right side
    20,392.56x = 374,861,084.54
  5. Step 5: Solve for x
    x = 374,861,084.54/20,392.56
  6. Step 6: Final answer
    x = 18,382.25

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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.