Home / 12,178.86-16,806.48-6,874.17

Finding the Fourth Proportional to 12,178.86, 16,806.48 and 6,874.17

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Solution

The fourth proportional to 12,178.86, 16,806.48 and 6,874.17 is: 9,486.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.86 : 16,806.48 = 6,874.17 : x
  2. Step 2: Convert to fraction form
    12,178.86/16,806.48 = 6,874.17/x
  3. Step 3: Cross multiply
    12,178.86x = 16,806.48 × 6,874.17
  4. Step 4: Simplify right side
    12,178.86x = 115,530,600.62
  5. Step 5: Solve for x
    x = 115,530,600.62/12,178.86
  6. Step 6: Final answer
    x = 9,486.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.