Home / 20,144.16-30,186-15,742.08

Finding the Fourth Proportional to 20,144.16, 30,186 and 15,742.08

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Solution

The fourth proportional to 20,144.16, 30,186 and 15,742.08 is: 23,589.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.16 : 30,186 = 15,742.08 : x
  2. Step 2: Convert to fraction form
    20,144.16/30,186 = 15,742.08/x
  3. Step 3: Cross multiply
    20,144.16x = 30,186 × 15,742.08
  4. Step 4: Simplify right side
    20,144.16x = 475,190,426.88
  5. Step 5: Solve for x
    x = 475,190,426.88/20,144.16
  6. Step 6: Final answer
    x = 23,589.49

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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.