Home / 31,980.41-47,974.98-10,914.78

Finding the Fourth Proportional to 31,980.41, 47,974.98 and 10,914.78

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Solution

The fourth proportional to 31,980.41, 47,974.98 and 10,914.78 is: 16,373.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,980.41 : 47,974.98 = 10,914.78 : x
  2. Step 2: Convert to fraction form
    31,980.41/47,974.98 = 10,914.78/x
  3. Step 3: Cross multiply
    31,980.41x = 47,974.98 × 10,914.78
  4. Step 4: Simplify right side
    31,980.41x = 523,636,352.20
  5. Step 5: Solve for x
    x = 523,636,352.20/31,980.41
  6. Step 6: Final answer
    x = 16,373.66

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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.