Home / 31,417.86-47,140.76-15,638.66

Finding the Fourth Proportional to 31,417.86, 47,140.76 and 15,638.66

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Solution

The fourth proportional to 31,417.86, 47,140.76 and 15,638.66 is: 23,464.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,417.86 : 47,140.76 = 15,638.66 : x
  2. Step 2: Convert to fraction form
    31,417.86/47,140.76 = 15,638.66/x
  3. Step 3: Cross multiply
    31,417.86x = 47,140.76 × 15,638.66
  4. Step 4: Simplify right side
    31,417.86x = 737,218,121.17
  5. Step 5: Solve for x
    x = 737,218,121.17/31,417.86
  6. Step 6: Final answer
    x = 23,464.94

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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.