Home / 31,721.44-43,769.28-19,146.88

Finding the Fourth Proportional to 31,721.44, 43,769.28 and 19,146.88

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Solution

The fourth proportional to 31,721.44, 43,769.28 and 19,146.88 is: 26,418.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.44 : 43,769.28 = 19,146.88 : x
  2. Step 2: Convert to fraction form
    31,721.44/43,769.28 = 19,146.88/x
  3. Step 3: Cross multiply
    31,721.44x = 43,769.28 × 19,146.88
  4. Step 4: Simplify right side
    31,721.44x = 838,045,151.85
  5. Step 5: Solve for x
    x = 838,045,151.85/31,721.44
  6. Step 6: Final answer
    x = 26,418.89

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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.