Home / 10,212.96-15,315.46-3,972.14

Finding the Fourth Proportional to 10,212.96, 15,315.46 and 3,972.14

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Solution

The fourth proportional to 10,212.96, 15,315.46 and 3,972.14 is: 5,956.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.96 : 15,315.46 = 3,972.14 : x
  2. Step 2: Convert to fraction form
    10,212.96/15,315.46 = 3,972.14/x
  3. Step 3: Cross multiply
    10,212.96x = 15,315.46 × 3,972.14
  4. Step 4: Simplify right side
    10,212.96x = 60,835,151.28
  5. Step 5: Solve for x
    x = 60,835,151.28/10,212.96
  6. Step 6: Final answer
    x = 5,956.66

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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.