Home / 31,860.93-47,791.85-12,140.57

Finding the Fourth Proportional to 31,860.93, 47,791.85 and 12,140.57

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Solution

The fourth proportional to 31,860.93, 47,791.85 and 12,140.57 is: 18,211.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,860.93 : 47,791.85 = 12,140.57 : x
  2. Step 2: Convert to fraction form
    31,860.93/47,791.85 = 12,140.57/x
  3. Step 3: Cross multiply
    31,860.93x = 47,791.85 × 12,140.57
  4. Step 4: Simplify right side
    31,860.93x = 580,220,000.69
  5. Step 5: Solve for x
    x = 580,220,000.69/31,860.93
  6. Step 6: Final answer
    x = 18,211.02

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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.