Home / 10,315.41-15,474.09-2,919.90

Finding the Fourth Proportional to 10,315.41, 15,474.09 and 2,919.90

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Solution

The fourth proportional to 10,315.41, 15,474.09 and 2,919.90 is: 4,380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,315.41 : 15,474.09 = 2,919.90 : x
  2. Step 2: Convert to fraction form
    10,315.41/15,474.09 = 2,919.90/x
  3. Step 3: Cross multiply
    10,315.41x = 15,474.09 × 2,919.90
  4. Step 4: Simplify right side
    10,315.41x = 45,182,795.39
  5. Step 5: Solve for x
    x = 45,182,795.39/10,315.41
  6. Step 6: Final answer
    x = 4,380.13

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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.