Home / 15,478.56-23,195.16-7,671.78

Finding the Fourth Proportional to 15,478.56, 23,195.16 and 7,671.78

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Solution

The fourth proportional to 15,478.56, 23,195.16 and 7,671.78 is: 11,496.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.56 : 23,195.16 = 7,671.78 : x
  2. Step 2: Convert to fraction form
    15,478.56/23,195.16 = 7,671.78/x
  3. Step 3: Cross multiply
    15,478.56x = 23,195.16 × 7,671.78
  4. Step 4: Simplify right side
    15,478.56x = 177,948,164.58
  5. Step 5: Solve for x
    x = 177,948,164.58/15,478.56
  6. Step 6: Final answer
    x = 11,496.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.