Home / 12,077.70-18,113.81-4,286.51

Finding the Fourth Proportional to 12,077.70, 18,113.81 and 4,286.51

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Solution

The fourth proportional to 12,077.70, 18,113.81 and 4,286.51 is: 6,428.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,077.70 : 18,113.81 = 4,286.51 : x
  2. Step 2: Convert to fraction form
    12,077.70/18,113.81 = 4,286.51/x
  3. Step 3: Cross multiply
    12,077.70x = 18,113.81 × 4,286.51
  4. Step 4: Simplify right side
    12,077.70x = 77,645,027.70
  5. Step 5: Solve for x
    x = 77,645,027.70/12,077.70
  6. Step 6: Final answer
    x = 6,428.79

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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.