Home / 12,112.23-18,115.22-10,787.37

Finding the Fourth Proportional to 12,112.23, 18,115.22 and 10,787.37

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Solution

The fourth proportional to 12,112.23, 18,115.22 and 10,787.37 is: 16,133.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.23 : 18,115.22 = 10,787.37 : x
  2. Step 2: Convert to fraction form
    12,112.23/18,115.22 = 10,787.37/x
  3. Step 3: Cross multiply
    12,112.23x = 18,115.22 × 10,787.37
  4. Step 4: Simplify right side
    12,112.23x = 195,415,580.77
  5. Step 5: Solve for x
    x = 195,415,580.77/12,112.23
  6. Step 6: Final answer
    x = 16,133.74

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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.