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Finding the Fourth Proportional to 12,143.16, 18,218.22 and 4,352.52

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Solution

The fourth proportional to 12,143.16, 18,218.22 and 4,352.52 is: 6,530.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.16 : 18,218.22 = 4,352.52 : x
  2. Step 2: Convert to fraction form
    12,143.16/18,218.22 = 4,352.52/x
  3. Step 3: Cross multiply
    12,143.16x = 18,218.22 × 4,352.52
  4. Step 4: Simplify right side
    12,143.16x = 79,295,166.91
  5. Step 5: Solve for x
    x = 79,295,166.91/12,143.16
  6. Step 6: Final answer
    x = 6,530.03

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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.