Home / 31,546.19-47,319.29-8,172.63

Finding the Fourth Proportional to 31,546.19, 47,319.29 and 8,172.63

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Solution

The fourth proportional to 31,546.19, 47,319.29 and 8,172.63 is: 12,258.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,546.19 : 47,319.29 = 8,172.63 : x
  2. Step 2: Convert to fraction form
    31,546.19/47,319.29 = 8,172.63/x
  3. Step 3: Cross multiply
    31,546.19x = 47,319.29 × 8,172.63
  4. Step 4: Simplify right side
    31,546.19x = 386,723,049.03
  5. Step 5: Solve for x
    x = 386,723,049.03/31,546.19
  6. Step 6: Final answer
    x = 12,258.95

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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.