Home / 13,863.28-19,131.38-7,575.79

Finding the Fourth Proportional to 13,863.28, 19,131.38 and 7,575.79

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Solution

The fourth proportional to 13,863.28, 19,131.38 and 7,575.79 is: 10,454.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.28 : 19,131.38 = 7,575.79 : x
  2. Step 2: Convert to fraction form
    13,863.28/19,131.38 = 7,575.79/x
  3. Step 3: Cross multiply
    13,863.28x = 19,131.38 × 7,575.79
  4. Step 4: Simplify right side
    13,863.28x = 144,935,279.41
  5. Step 5: Solve for x
    x = 144,935,279.41/13,863.28
  6. Step 6: Final answer
    x = 10,454.62

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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.