Home / 13,371.09-18,452.29-7,402.75

Finding the Fourth Proportional to 13,371.09, 18,452.29 and 7,402.75

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Solution

The fourth proportional to 13,371.09, 18,452.29 and 7,402.75 is: 10,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.09 : 18,452.29 = 7,402.75 : x
  2. Step 2: Convert to fraction form
    13,371.09/18,452.29 = 7,402.75/x
  3. Step 3: Cross multiply
    13,371.09x = 18,452.29 × 7,402.75
  4. Step 4: Simplify right side
    13,371.09x = 136,597,689.80
  5. Step 5: Solve for x
    x = 136,597,689.80/13,371.09
  6. Step 6: Final answer
    x = 10,215.90

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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.