Home / 19,766.36-27,231.39-13,787.36

Finding the Fourth Proportional to 19,766.36, 27,231.39 and 13,787.36

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Solution

The fourth proportional to 19,766.36, 27,231.39 and 13,787.36 is: 18,994.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,766.36 : 27,231.39 = 13,787.36 : x
  2. Step 2: Convert to fraction form
    19,766.36/27,231.39 = 13,787.36/x
  3. Step 3: Cross multiply
    19,766.36x = 27,231.39 × 13,787.36
  4. Step 4: Simplify right side
    19,766.36x = 375,448,977.23
  5. Step 5: Solve for x
    x = 375,448,977.23/19,766.36
  6. Step 6: Final answer
    x = 18,994.34

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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.