Home / 11,105.11-15,328.47-6,392.53

Finding the Fourth Proportional to 11,105.11, 15,328.47 and 6,392.53

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Solution

The fourth proportional to 11,105.11, 15,328.47 and 6,392.53 is: 8,823.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.11 : 15,328.47 = 6,392.53 : x
  2. Step 2: Convert to fraction form
    11,105.11/15,328.47 = 6,392.53/x
  3. Step 3: Cross multiply
    11,105.11x = 15,328.47 × 6,392.53
  4. Step 4: Simplify right side
    11,105.11x = 97,987,704.33
  5. Step 5: Solve for x
    x = 97,987,704.33/11,105.11
  6. Step 6: Final answer
    x = 8,823.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.