Home / 12,240.78-18,361.53-8,107.26

Finding the Fourth Proportional to 12,240.78, 18,361.53 and 8,107.26

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Solution

The fourth proportional to 12,240.78, 18,361.53 and 8,107.26 is: 12,161.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.78 : 18,361.53 = 8,107.26 : x
  2. Step 2: Convert to fraction form
    12,240.78/18,361.53 = 8,107.26/x
  3. Step 3: Cross multiply
    12,240.78x = 18,361.53 × 8,107.26
  4. Step 4: Simplify right side
    12,240.78x = 148,861,697.71
  5. Step 5: Solve for x
    x = 148,861,697.71/12,240.78
  6. Step 6: Final answer
    x = 12,161.13

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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.