Home / 23,147.44-31,949.88-13,721.20

Finding the Fourth Proportional to 23,147.44, 31,949.88 and 13,721.20

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Solution

The fourth proportional to 23,147.44, 31,949.88 and 13,721.20 is: 18,939.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,147.44 : 31,949.88 = 13,721.20 : x
  2. Step 2: Convert to fraction form
    23,147.44/31,949.88 = 13,721.20/x
  3. Step 3: Cross multiply
    23,147.44x = 31,949.88 × 13,721.20
  4. Step 4: Simplify right side
    23,147.44x = 438,390,693.46
  5. Step 5: Solve for x
    x = 438,390,693.46/23,147.44
  6. Step 6: Final answer
    x = 18,939.06

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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.