Home / 13,306.93-19,964.30-3,947.20

Finding the Fourth Proportional to 13,306.93, 19,964.30 and 3,947.20

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Solution

The fourth proportional to 13,306.93, 19,964.30 and 3,947.20 is: 5,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.93 : 19,964.30 = 3,947.20 : x
  2. Step 2: Convert to fraction form
    13,306.93/19,964.30 = 3,947.20/x
  3. Step 3: Cross multiply
    13,306.93x = 19,964.30 × 3,947.20
  4. Step 4: Simplify right side
    13,306.93x = 78,803,084.96
  5. Step 5: Solve for x
    x = 78,803,084.96/13,306.93
  6. Step 6: Final answer
    x = 5,921.96

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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.