Home / 18,318.78-25,278.21-10,361.70

Finding the Fourth Proportional to 18,318.78, 25,278.21 and 10,361.70

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Solution

The fourth proportional to 18,318.78, 25,278.21 and 10,361.70 is: 14,298.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.78 : 25,278.21 = 10,361.70 : x
  2. Step 2: Convert to fraction form
    18,318.78/25,278.21 = 10,361.70/x
  3. Step 3: Cross multiply
    18,318.78x = 25,278.21 × 10,361.70
  4. Step 4: Simplify right side
    18,318.78x = 261,925,228.56
  5. Step 5: Solve for x
    x = 261,925,228.56/18,318.78
  6. Step 6: Final answer
    x = 14,298.18

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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.