Home / 12,452.09-18,678.15-4,129.91

Finding the Fourth Proportional to 12,452.09, 18,678.15 and 4,129.91

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Solution

The fourth proportional to 12,452.09, 18,678.15 and 4,129.91 is: 6,194.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,452.09 : 18,678.15 = 4,129.91 : x
  2. Step 2: Convert to fraction form
    12,452.09/18,678.15 = 4,129.91/x
  3. Step 3: Cross multiply
    12,452.09x = 18,678.15 × 4,129.91
  4. Step 4: Simplify right side
    12,452.09x = 77,139,057.82
  5. Step 5: Solve for x
    x = 77,139,057.82/12,452.09
  6. Step 6: Final answer
    x = 6,194.87

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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.