Home / 10,143.46-15,215.13-2,748.10

Finding the Fourth Proportional to 10,143.46, 15,215.13 and 2,748.10

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Solution

The fourth proportional to 10,143.46, 15,215.13 and 2,748.10 is: 4,122.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.46 : 15,215.13 = 2,748.10 : x
  2. Step 2: Convert to fraction form
    10,143.46/15,215.13 = 2,748.10/x
  3. Step 3: Cross multiply
    10,143.46x = 15,215.13 × 2,748.10
  4. Step 4: Simplify right side
    10,143.46x = 41,812,698.75
  5. Step 5: Solve for x
    x = 41,812,698.75/10,143.46
  6. Step 6: Final answer
    x = 4,122.13

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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.