Home / 31,536.76-47,283.66-15,721.72

Finding the Fourth Proportional to 31,536.76, 47,283.66 and 15,721.72

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Solution

The fourth proportional to 31,536.76, 47,283.66 and 15,721.72 is: 23,571.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,536.76 : 47,283.66 = 15,721.72 : x
  2. Step 2: Convert to fraction form
    31,536.76/47,283.66 = 15,721.72/x
  3. Step 3: Cross multiply
    31,536.76x = 47,283.66 × 15,721.72
  4. Step 4: Simplify right side
    31,536.76x = 743,380,463.10
  5. Step 5: Solve for x
    x = 743,380,463.10/31,536.76
  6. Step 6: Final answer
    x = 23,571.87

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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.