Home / 12,147.17-18,220.77-3,382.08

Finding the Fourth Proportional to 12,147.17, 18,220.77 and 3,382.08

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Solution

The fourth proportional to 12,147.17, 18,220.77 and 3,382.08 is: 5,073.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.17 : 18,220.77 = 3,382.08 : x
  2. Step 2: Convert to fraction form
    12,147.17/18,220.77 = 3,382.08/x
  3. Step 3: Cross multiply
    12,147.17x = 18,220.77 × 3,382.08
  4. Step 4: Simplify right side
    12,147.17x = 61,624,101.80
  5. Step 5: Solve for x
    x = 61,624,101.80/12,147.17
  6. Step 6: Final answer
    x = 5,073.13

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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.