Home / 11,147.04-15,375.60-7,161.84

Finding the Fourth Proportional to 11,147.04, 15,375.60 and 7,161.84

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Solution

The fourth proportional to 11,147.04, 15,375.60 and 7,161.84 is: 9,878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,147.04 : 15,375.60 = 7,161.84 : x
  2. Step 2: Convert to fraction form
    11,147.04/15,375.60 = 7,161.84/x
  3. Step 3: Cross multiply
    11,147.04x = 15,375.60 × 7,161.84
  4. Step 4: Simplify right side
    11,147.04x = 110,117,587.10
  5. Step 5: Solve for x
    x = 110,117,587.10/11,147.04
  6. Step 6: Final answer
    x = 9,878.64

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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.