Home / 20,964.98-31,436.61-6,171.95

Finding the Fourth Proportional to 20,964.98, 31,436.61 and 6,171.95

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Solution

The fourth proportional to 20,964.98, 31,436.61 and 6,171.95 is: 9,254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.98 : 31,436.61 = 6,171.95 : x
  2. Step 2: Convert to fraction form
    20,964.98/31,436.61 = 6,171.95/x
  3. Step 3: Cross multiply
    20,964.98x = 31,436.61 × 6,171.95
  4. Step 4: Simplify right side
    20,964.98x = 194,025,063.71
  5. Step 5: Solve for x
    x = 194,025,063.71/20,964.98
  6. Step 6: Final answer
    x = 9,254.72

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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.