Home / 12,857.03-17,742.62-7,191.75

Finding the Fourth Proportional to 12,857.03, 17,742.62 and 7,191.75

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Solution

The fourth proportional to 12,857.03, 17,742.62 and 7,191.75 is: 9,924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.03 : 17,742.62 = 7,191.75 : x
  2. Step 2: Convert to fraction form
    12,857.03/17,742.62 = 7,191.75/x
  3. Step 3: Cross multiply
    12,857.03x = 17,742.62 × 7,191.75
  4. Step 4: Simplify right side
    12,857.03x = 127,600,487.39
  5. Step 5: Solve for x
    x = 127,600,487.39/12,857.03
  6. Step 6: Final answer
    x = 9,924.57

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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.