Home / 16,478.97-22,778.36-15,171.12

Finding the Fourth Proportional to 16,478.97, 22,778.36 and 15,171.12

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Solution

The fourth proportional to 16,478.97, 22,778.36 and 15,171.12 is: 20,970.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,478.97 : 22,778.36 = 15,171.12 : x
  2. Step 2: Convert to fraction form
    16,478.97/22,778.36 = 15,171.12/x
  3. Step 3: Cross multiply
    16,478.97x = 22,778.36 × 15,171.12
  4. Step 4: Simplify right side
    16,478.97x = 345,573,157.11
  5. Step 5: Solve for x
    x = 345,573,157.11/16,478.97
  6. Step 6: Final answer
    x = 20,970.56

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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.