Home / 18,640.28-25,723.74-10,142.42

Finding the Fourth Proportional to 18,640.28, 25,723.74 and 10,142.42

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Solution

The fourth proportional to 18,640.28, 25,723.74 and 10,142.42 is: 13,996.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.28 : 25,723.74 = 10,142.42 : x
  2. Step 2: Convert to fraction form
    18,640.28/25,723.74 = 10,142.42/x
  3. Step 3: Cross multiply
    18,640.28x = 25,723.74 × 10,142.42
  4. Step 4: Simplify right side
    18,640.28x = 260,900,975.05
  5. Step 5: Solve for x
    x = 260,900,975.05/18,640.28
  6. Step 6: Final answer
    x = 13,996.62

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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.