Home / 18,683.28-25,781.76-10,299.78

Finding the Fourth Proportional to 18,683.28, 25,781.76 and 10,299.78

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Solution

The fourth proportional to 18,683.28, 25,781.76 and 10,299.78 is: 14,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.28 : 25,781.76 = 10,299.78 : x
  2. Step 2: Convert to fraction form
    18,683.28/25,781.76 = 10,299.78/x
  3. Step 3: Cross multiply
    18,683.28x = 25,781.76 × 10,299.78
  4. Step 4: Simplify right side
    18,683.28x = 265,546,456.01
  5. Step 5: Solve for x
    x = 265,546,456.01/18,683.28
  6. Step 6: Final answer
    x = 14,213.05

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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.