Home / 12,135.48-18,205.14-4,344.12

Finding the Fourth Proportional to 12,135.48, 18,205.14 and 4,344.12

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Solution

The fourth proportional to 12,135.48, 18,205.14 and 4,344.12 is: 6,516.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.48 : 18,205.14 = 4,344.12 : x
  2. Step 2: Convert to fraction form
    12,135.48/18,205.14 = 4,344.12/x
  3. Step 3: Cross multiply
    12,135.48x = 18,205.14 × 4,344.12
  4. Step 4: Simplify right side
    12,135.48x = 79,085,312.78
  5. Step 5: Solve for x
    x = 79,085,312.78/12,135.48
  6. Step 6: Final answer
    x = 6,516.87

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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.