Home / 12,076.70-18,115.05-11,639.30

Finding the Fourth Proportional to 12,076.70, 18,115.05 and 11,639.30

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Solution

The fourth proportional to 12,076.70, 18,115.05 and 11,639.30 is: 17,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,076.70 : 18,115.05 = 11,639.30 : x
  2. Step 2: Convert to fraction form
    12,076.70/18,115.05 = 11,639.30/x
  3. Step 3: Cross multiply
    12,076.70x = 18,115.05 × 11,639.30
  4. Step 4: Simplify right side
    12,076.70x = 210,846,501.47
  5. Step 5: Solve for x
    x = 210,846,501.47/12,076.70
  6. Step 6: Final answer
    x = 17,458.95

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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.