Home / 23,171.44-31,971.24-15,631.76

Finding the Fourth Proportional to 23,171.44, 31,971.24 and 15,631.76

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Solution

The fourth proportional to 23,171.44, 31,971.24 and 15,631.76 is: 21,568.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,171.44 : 31,971.24 = 15,631.76 : x
  2. Step 2: Convert to fraction form
    23,171.44/31,971.24 = 15,631.76/x
  3. Step 3: Cross multiply
    23,171.44x = 31,971.24 × 15,631.76
  4. Step 4: Simplify right side
    23,171.44x = 499,766,750.58
  5. Step 5: Solve for x
    x = 499,766,750.58/23,171.44
  6. Step 6: Final answer
    x = 21,568.22

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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.