Home / 11,106.92-15,329.16-6,391.16

Finding the Fourth Proportional to 11,106.92, 15,329.16 and 6,391.16

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Solution

The fourth proportional to 11,106.92, 15,329.16 and 6,391.16 is: 8,820.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,106.92 : 15,329.16 = 6,391.16 : x
  2. Step 2: Convert to fraction form
    11,106.92/15,329.16 = 6,391.16/x
  3. Step 3: Cross multiply
    11,106.92x = 15,329.16 × 6,391.16
  4. Step 4: Simplify right side
    11,106.92x = 97,971,114.23
  5. Step 5: Solve for x
    x = 97,971,114.23/11,106.92
  6. Step 6: Final answer
    x = 8,820.73

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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.