Home / 12,069.57-18,101.61-4,278.39

Finding the Fourth Proportional to 12,069.57, 18,101.61 and 4,278.39

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Solution

The fourth proportional to 12,069.57, 18,101.61 and 4,278.39 is: 6,416.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,069.57 : 18,101.61 = 4,278.39 : x
  2. Step 2: Convert to fraction form
    12,069.57/18,101.61 = 4,278.39/x
  3. Step 3: Cross multiply
    12,069.57x = 18,101.61 × 4,278.39
  4. Step 4: Simplify right side
    12,069.57x = 77,445,747.21
  5. Step 5: Solve for x
    x = 77,445,747.21/12,069.57
  6. Step 6: Final answer
    x = 6,416.61

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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.