Home / 19,519.76-29,286.52-12,971.92

Finding the Fourth Proportional to 19,519.76, 29,286.52 and 12,971.92

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Solution

The fourth proportional to 19,519.76, 29,286.52 and 12,971.92 is: 19,462.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,519.76 : 29,286.52 = 12,971.92 : x
  2. Step 2: Convert to fraction form
    19,519.76/29,286.52 = 12,971.92/x
  3. Step 3: Cross multiply
    19,519.76x = 29,286.52 × 12,971.92
  4. Step 4: Simplify right side
    19,519.76x = 379,902,394.52
  5. Step 5: Solve for x
    x = 379,902,394.52/19,519.76
  6. Step 6: Final answer
    x = 19,462.45

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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.