Home / 18,581.40-27,872.10-10,708.20

Finding the Fourth Proportional to 18,581.40, 27,872.10 and 10,708.20

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Solution

The fourth proportional to 18,581.40, 27,872.10 and 10,708.20 is: 16,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.40 : 27,872.10 = 10,708.20 : x
  2. Step 2: Convert to fraction form
    18,581.40/27,872.10 = 10,708.20/x
  3. Step 3: Cross multiply
    18,581.40x = 27,872.10 × 10,708.20
  4. Step 4: Simplify right side
    18,581.40x = 298,460,021.22
  5. Step 5: Solve for x
    x = 298,460,021.22/18,581.40
  6. Step 6: Final answer
    x = 16,062.30

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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.