Home / 10,213.04-15,315.62-3,972.21

Finding the Fourth Proportional to 10,213.04, 15,315.62 and 3,972.21

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Solution

The fourth proportional to 10,213.04, 15,315.62 and 3,972.21 is: 5,956.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,213.04 : 15,315.62 = 3,972.21 : x
  2. Step 2: Convert to fraction form
    10,213.04/15,315.62 = 3,972.21/x
  3. Step 3: Cross multiply
    10,213.04x = 15,315.62 × 3,972.21
  4. Step 4: Simplify right side
    10,213.04x = 60,836,839.06
  5. Step 5: Solve for x
    x = 60,836,839.06/10,213.04
  6. Step 6: Final answer
    x = 5,956.78

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1.5x scale

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.