Home / 31,391.52-47,099.40-13,848.96

Finding the Fourth Proportional to 31,391.52, 47,099.40 and 13,848.96

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Solution

The fourth proportional to 31,391.52, 47,099.40 and 13,848.96 is: 20,778.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.52 : 47,099.40 = 13,848.96 : x
  2. Step 2: Convert to fraction form
    31,391.52/47,099.40 = 13,848.96/x
  3. Step 3: Cross multiply
    31,391.52x = 47,099.40 × 13,848.96
  4. Step 4: Simplify right side
    31,391.52x = 652,277,706.62
  5. Step 5: Solve for x
    x = 652,277,706.62/31,391.52
  6. Step 6: Final answer
    x = 20,778.79

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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.