Home / 13,675.41-18,872.06-7,387.78

Finding the Fourth Proportional to 13,675.41, 18,872.06 and 7,387.78

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Solution

The fourth proportional to 13,675.41, 18,872.06 and 7,387.78 is: 10,195.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.41 : 18,872.06 = 7,387.78 : x
  2. Step 2: Convert to fraction form
    13,675.41/18,872.06 = 7,387.78/x
  3. Step 3: Cross multiply
    13,675.41x = 18,872.06 × 7,387.78
  4. Step 4: Simplify right side
    13,675.41x = 139,422,669.49
  5. Step 5: Solve for x
    x = 139,422,669.49/13,675.41
  6. Step 6: Final answer
    x = 10,195.14

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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.