Home / 31,419.84-47,129.60-8,046.24

Finding the Fourth Proportional to 31,419.84, 47,129.60 and 8,046.24

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Solution

The fourth proportional to 31,419.84, 47,129.60 and 8,046.24 is: 12,069.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,419.84 : 47,129.60 = 8,046.24 : x
  2. Step 2: Convert to fraction form
    31,419.84/47,129.60 = 8,046.24/x
  3. Step 3: Cross multiply
    31,419.84x = 47,129.60 × 8,046.24
  4. Step 4: Simplify right side
    31,419.84x = 379,216,072.70
  5. Step 5: Solve for x
    x = 379,216,072.70/31,419.84
  6. Step 6: Final answer
    x = 12,069.32

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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.