Home / 13,981.54-20,972.19-6,581.96

Finding the Fourth Proportional to 13,981.54, 20,972.19 and 6,581.96

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Solution

The fourth proportional to 13,981.54, 20,972.19 and 6,581.96 is: 9,872.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.54 : 20,972.19 = 6,581.96 : x
  2. Step 2: Convert to fraction form
    13,981.54/20,972.19 = 6,581.96/x
  3. Step 3: Cross multiply
    13,981.54x = 20,972.19 × 6,581.96
  4. Step 4: Simplify right side
    13,981.54x = 138,038,095.65
  5. Step 5: Solve for x
    x = 138,038,095.65/13,981.54
  6. Step 6: Final answer
    x = 9,872.88

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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.