Home / 13,675.38-18,872.03-7,387.75

Finding the Fourth Proportional to 13,675.38, 18,872.03 and 7,387.75

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Solution

The fourth proportional to 13,675.38, 18,872.03 and 7,387.75 is: 10,195.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.38 : 18,872.03 = 7,387.75 : x
  2. Step 2: Convert to fraction form
    13,675.38/18,872.03 = 7,387.75/x
  3. Step 3: Cross multiply
    13,675.38x = 18,872.03 × 7,387.75
  4. Step 4: Simplify right side
    13,675.38x = 139,421,839.63
  5. Step 5: Solve for x
    x = 139,421,839.63/13,675.38
  6. Step 6: Final answer
    x = 10,195.10

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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.