Home / 13,165.21-18,167.97-7,863.13

Finding the Fourth Proportional to 13,165.21, 18,167.97 and 7,863.13

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Solution

The fourth proportional to 13,165.21, 18,167.97 and 7,863.13 is: 10,851.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.21 : 18,167.97 = 7,863.13 : x
  2. Step 2: Convert to fraction form
    13,165.21/18,167.97 = 7,863.13/x
  3. Step 3: Cross multiply
    13,165.21x = 18,167.97 × 7,863.13
  4. Step 4: Simplify right side
    13,165.21x = 142,857,109.95
  5. Step 5: Solve for x
    x = 142,857,109.95/13,165.21
  6. Step 6: Final answer
    x = 10,851.11

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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.