Home / 18,871.38-28,316.79-10,546.20

Finding the Fourth Proportional to 18,871.38, 28,316.79 and 10,546.20

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Solution

The fourth proportional to 18,871.38, 28,316.79 and 10,546.20 is: 15,824.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.38 : 28,316.79 = 10,546.20 : x
  2. Step 2: Convert to fraction form
    18,871.38/28,316.79 = 10,546.20/x
  3. Step 3: Cross multiply
    18,871.38x = 28,316.79 × 10,546.20
  4. Step 4: Simplify right side
    18,871.38x = 298,634,530.70
  5. Step 5: Solve for x
    x = 298,634,530.70/18,871.38
  6. Step 6: Final answer
    x = 15,824.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.