Home / 12,178.76-18,269.58-3,859.16

Finding the Fourth Proportional to 12,178.76, 18,269.58 and 3,859.16

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Solution

The fourth proportional to 12,178.76, 18,269.58 and 3,859.16 is: 5,789.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.76 : 18,269.58 = 3,859.16 : x
  2. Step 2: Convert to fraction form
    12,178.76/18,269.58 = 3,859.16/x
  3. Step 3: Cross multiply
    12,178.76x = 18,269.58 × 3,859.16
  4. Step 4: Simplify right side
    12,178.76x = 70,505,232.35
  5. Step 5: Solve for x
    x = 70,505,232.35/12,178.76
  6. Step 6: Final answer
    x = 5,789.20

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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.