Home / 38,721.89-58,071.20-13,758.65

Finding the Fourth Proportional to 38,721.89, 58,071.20 and 13,758.65

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Solution

The fourth proportional to 38,721.89, 58,071.20 and 13,758.65 is: 20,633.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721.89 : 58,071.20 = 13,758.65 : x
  2. Step 2: Convert to fraction form
    38,721.89/58,071.20 = 13,758.65/x
  3. Step 3: Cross multiply
    38,721.89x = 58,071.20 × 13,758.65
  4. Step 4: Simplify right side
    38,721.89x = 798,980,956.73
  5. Step 5: Solve for x
    x = 798,980,956.73/38,721.89
  6. Step 6: Final answer
    x = 20,633.83

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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.