Home / 13,787.28-19,039.92-11,786.22

Finding the Fourth Proportional to 13,787.28, 19,039.92 and 11,786.22

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Solution

The fourth proportional to 13,787.28, 19,039.92 and 11,786.22 is: 16,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.28 : 19,039.92 = 11,786.22 : x
  2. Step 2: Convert to fraction form
    13,787.28/19,039.92 = 11,786.22/x
  3. Step 3: Cross multiply
    13,787.28x = 19,039.92 × 11,786.22
  4. Step 4: Simplify right side
    13,787.28x = 224,408,685.90
  5. Step 5: Solve for x
    x = 224,408,685.90/13,787.28
  6. Step 6: Final answer
    x = 16,276.50

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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.