Home / 12,077.94-18,119.64-4,286.76

Finding the Fourth Proportional to 12,077.94, 18,119.64 and 4,286.76

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Solution

The fourth proportional to 12,077.94, 18,119.64 and 4,286.76 is: 6,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,077.94 : 18,119.64 = 4,286.76 : x
  2. Step 2: Convert to fraction form
    12,077.94/18,119.64 = 4,286.76/x
  3. Step 3: Cross multiply
    12,077.94x = 18,119.64 × 4,286.76
  4. Step 4: Simplify right side
    12,077.94x = 77,674,547.97
  5. Step 5: Solve for x
    x = 77,674,547.97/12,077.94
  6. Step 6: Final answer
    x = 6,431.11

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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.