Home / 31,425.21-47,144.77-10,371.76

Finding the Fourth Proportional to 31,425.21, 47,144.77 and 10,371.76

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Solution

The fourth proportional to 31,425.21, 47,144.77 and 10,371.76 is: 15,559.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425.21 : 47,144.77 = 10,371.76 : x
  2. Step 2: Convert to fraction form
    31,425.21/47,144.77 = 10,371.76/x
  3. Step 3: Cross multiply
    31,425.21x = 47,144.77 × 10,371.76
  4. Step 4: Simplify right side
    31,425.21x = 488,974,095.90
  5. Step 5: Solve for x
    x = 488,974,095.90/31,425.21
  6. Step 6: Final answer
    x = 15,559.93

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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.