Home / 13,371.58-18,452.28-7,402.78

Finding the Fourth Proportional to 13,371.58, 18,452.28 and 7,402.78

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Solution

The fourth proportional to 13,371.58, 18,452.28 and 7,402.78 is: 10,215.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.58 : 18,452.28 = 7,402.78 : x
  2. Step 2: Convert to fraction form
    13,371.58/18,452.28 = 7,402.78/x
  3. Step 3: Cross multiply
    13,371.58x = 18,452.28 × 7,402.78
  4. Step 4: Simplify right side
    13,371.58x = 136,598,169.34
  5. Step 5: Solve for x
    x = 136,598,169.34/13,371.58
  6. Step 6: Final answer
    x = 10,215.56

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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.