Home / 31,691.03-43,743.35-18,271.25

Finding the Fourth Proportional to 31,691.03, 43,743.35 and 18,271.25

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Solution

The fourth proportional to 31,691.03, 43,743.35 and 18,271.25 is: 25,219.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,691.03 : 43,743.35 = 18,271.25 : x
  2. Step 2: Convert to fraction form
    31,691.03/43,743.35 = 18,271.25/x
  3. Step 3: Cross multiply
    31,691.03x = 43,743.35 × 18,271.25
  4. Step 4: Simplify right side
    31,691.03x = 799,245,510.65
  5. Step 5: Solve for x
    x = 799,245,510.65/31,691.03
  6. Step 6: Final answer
    x = 25,219.93

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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.