Home / 13,680.38-18,871.62-9,196.43

Finding the Fourth Proportional to 13,680.38, 18,871.62 and 9,196.43

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Solution

The fourth proportional to 13,680.38, 18,871.62 and 9,196.43 is: 12,686.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.38 : 18,871.62 = 9,196.43 : x
  2. Step 2: Convert to fraction form
    13,680.38/18,871.62 = 9,196.43/x
  3. Step 3: Cross multiply
    13,680.38x = 18,871.62 × 9,196.43
  4. Step 4: Simplify right side
    13,680.38x = 173,551,437.96
  5. Step 5: Solve for x
    x = 173,551,437.96/13,680.38
  6. Step 6: Final answer
    x = 12,686.16

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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.