Home / 11,715.13-17,561.41-4,315.55

Finding the Fourth Proportional to 11,715.13, 17,561.41 and 4,315.55

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Solution

The fourth proportional to 11,715.13, 17,561.41 and 4,315.55 is: 6,469.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.13 : 17,561.41 = 4,315.55 : x
  2. Step 2: Convert to fraction form
    11,715.13/17,561.41 = 4,315.55/x
  3. Step 3: Cross multiply
    11,715.13x = 17,561.41 × 4,315.55
  4. Step 4: Simplify right side
    11,715.13x = 75,787,044.33
  5. Step 5: Solve for x
    x = 75,787,044.33/11,715.13
  6. Step 6: Final answer
    x = 6,469.16

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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.