Home / 11,106.49-15,326.97-6,391.69

Finding the Fourth Proportional to 11,106.49, 15,326.97 and 6,391.69

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Solution

The fourth proportional to 11,106.49, 15,326.97 and 6,391.69 is: 8,820.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,106.49 : 15,326.97 = 6,391.69 : x
  2. Step 2: Convert to fraction form
    11,106.49/15,326.97 = 6,391.69/x
  3. Step 3: Cross multiply
    11,106.49x = 15,326.97 × 6,391.69
  4. Step 4: Simplify right side
    11,106.49x = 97,965,132.29
  5. Step 5: Solve for x
    x = 97,965,132.29/11,106.49
  6. Step 6: Final answer
    x = 8,820.53

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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.