Home / 18,781.42-25,916.56-11,226.25

Finding the Fourth Proportional to 18,781.42, 25,916.56 and 11,226.25

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Solution

The fourth proportional to 18,781.42, 25,916.56 and 11,226.25 is: 15,491.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.42 : 25,916.56 = 11,226.25 : x
  2. Step 2: Convert to fraction form
    18,781.42/25,916.56 = 11,226.25/x
  3. Step 3: Cross multiply
    18,781.42x = 25,916.56 × 11,226.25
  4. Step 4: Simplify right side
    18,781.42x = 290,945,624.05
  5. Step 5: Solve for x
    x = 290,945,624.05/18,781.42
  6. Step 6: Final answer
    x = 15,491.15

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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.