Home / 13,251.72-19,839.78-10,287.12

Finding the Fourth Proportional to 13,251.72, 19,839.78 and 10,287.12

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Solution

The fourth proportional to 13,251.72, 19,839.78 and 10,287.12 is: 15,401.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.72 : 19,839.78 = 10,287.12 : x
  2. Step 2: Convert to fraction form
    13,251.72/19,839.78 = 10,287.12/x
  3. Step 3: Cross multiply
    13,251.72x = 19,839.78 × 10,287.12
  4. Step 4: Simplify right side
    13,251.72x = 204,094,197.63
  5. Step 5: Solve for x
    x = 204,094,197.63/13,251.72
  6. Step 6: Final answer
    x = 15,401.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.