Home / 13,675.42-18,872.07-7,387.79

Finding the Fourth Proportional to 13,675.42, 18,872.07 and 7,387.79

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Solution

The fourth proportional to 13,675.42, 18,872.07 and 7,387.79 is: 10,195.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.42 : 18,872.07 = 7,387.79 : x
  2. Step 2: Convert to fraction form
    13,675.42/18,872.07 = 7,387.79/x
  3. Step 3: Cross multiply
    13,675.42x = 18,872.07 × 7,387.79
  4. Step 4: Simplify right side
    13,675.42x = 139,422,890.03
  5. Step 5: Solve for x
    x = 139,422,890.03/13,675.42
  6. Step 6: Final answer
    x = 10,195.15

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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.