Home / 18,741.20-25,871.28-11,938.16

Finding the Fourth Proportional to 18,741.20, 25,871.28 and 11,938.16

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Solution

The fourth proportional to 18,741.20, 25,871.28 and 11,938.16 is: 16,480.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.20 : 25,871.28 = 11,938.16 : x
  2. Step 2: Convert to fraction form
    18,741.20/25,871.28 = 11,938.16/x
  3. Step 3: Cross multiply
    18,741.20x = 25,871.28 × 11,938.16
  4. Step 4: Simplify right side
    18,741.20x = 308,855,480.04
  5. Step 5: Solve for x
    x = 308,855,480.04/18,741.20
  6. Step 6: Final answer
    x = 16,480.03

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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.