Home / 31,614.75-47,354.67-20,488.41

Finding the Fourth Proportional to 31,614.75, 47,354.67 and 20,488.41

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Solution

The fourth proportional to 31,614.75, 47,354.67 and 20,488.41 is: 30,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,614.75 : 47,354.67 = 20,488.41 : x
  2. Step 2: Convert to fraction form
    31,614.75/47,354.67 = 20,488.41/x
  3. Step 3: Cross multiply
    31,614.75x = 47,354.67 × 20,488.41
  4. Step 4: Simplify right side
    31,614.75x = 970,221,894.37
  5. Step 5: Solve for x
    x = 970,221,894.37/31,614.75
  6. Step 6: Final answer
    x = 30,688.90

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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.