Home / 13,787.44-19,023.37-8,121.76

Finding the Fourth Proportional to 13,787.44, 19,023.37 and 8,121.76

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Solution

The fourth proportional to 13,787.44, 19,023.37 and 8,121.76 is: 11,206.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.44 : 19,023.37 = 8,121.76 : x
  2. Step 2: Convert to fraction form
    13,787.44/19,023.37 = 8,121.76/x
  3. Step 3: Cross multiply
    13,787.44x = 19,023.37 × 8,121.76
  4. Step 4: Simplify right side
    13,787.44x = 154,503,293.09
  5. Step 5: Solve for x
    x = 154,503,293.09/13,787.44
  6. Step 6: Final answer
    x = 11,206.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.