Home / 12,165.39-18,247.88-3,400.18

Finding the Fourth Proportional to 12,165.39, 18,247.88 and 3,400.18

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Solution

The fourth proportional to 12,165.39, 18,247.88 and 3,400.18 is: 5,100.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.39 : 18,247.88 = 3,400.18 : x
  2. Step 2: Convert to fraction form
    12,165.39/18,247.88 = 3,400.18/x
  3. Step 3: Cross multiply
    12,165.39x = 18,247.88 × 3,400.18
  4. Step 4: Simplify right side
    12,165.39x = 62,046,039.50
  5. Step 5: Solve for x
    x = 62,046,039.50/12,165.39
  6. Step 6: Final answer
    x = 5,100.21

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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.