Home / 10,147.39-13,977.35-7,157.97

Finding the Fourth Proportional to 10,147.39, 13,977.35 and 7,157.97

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Solution

The fourth proportional to 10,147.39, 13,977.35 and 7,157.97 is: 9,859.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.39 : 13,977.35 = 7,157.97 : x
  2. Step 2: Convert to fraction form
    10,147.39/13,977.35 = 7,157.97/x
  3. Step 3: Cross multiply
    10,147.39x = 13,977.35 × 7,157.97
  4. Step 4: Simplify right side
    10,147.39x = 100,049,451.98
  5. Step 5: Solve for x
    x = 100,049,451.98/10,147.39
  6. Step 6: Final answer
    x = 9,859.62

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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.