Home / 10,091.80-13,925.92-5,615.44

Finding the Fourth Proportional to 10,091.80, 13,925.92 and 5,615.44

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Solution

The fourth proportional to 10,091.80, 13,925.92 and 5,615.44 is: 7,748.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,091.80 : 13,925.92 = 5,615.44 : x
  2. Step 2: Convert to fraction form
    10,091.80/13,925.92 = 5,615.44/x
  3. Step 3: Cross multiply
    10,091.80x = 13,925.92 × 5,615.44
  4. Step 4: Simplify right side
    10,091.80x = 78,200,168.20
  5. Step 5: Solve for x
    x = 78,200,168.20/10,091.80
  6. Step 6: Final answer
    x = 7,748.88

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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.