Home / 11,315.16-16,972.74-3,419.92

Finding the Fourth Proportional to 11,315.16, 16,972.74 and 3,419.92

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Solution

The fourth proportional to 11,315.16, 16,972.74 and 3,419.92 is: 5,129.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.16 : 16,972.74 = 3,419.92 : x
  2. Step 2: Convert to fraction form
    11,315.16/16,972.74 = 3,419.92/x
  3. Step 3: Cross multiply
    11,315.16x = 16,972.74 × 3,419.92
  4. Step 4: Simplify right side
    11,315.16x = 58,045,434.20
  5. Step 5: Solve for x
    x = 58,045,434.20/11,315.16
  6. Step 6: Final answer
    x = 5,129.88

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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.