Home / 15,786.08-21,787.44-9,499.04

Finding the Fourth Proportional to 15,786.08, 21,787.44 and 9,499.04

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Solution

The fourth proportional to 15,786.08, 21,787.44 and 9,499.04 is: 13,110.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786.08 : 21,787.44 = 9,499.04 : x
  2. Step 2: Convert to fraction form
    15,786.08/21,787.44 = 9,499.04/x
  3. Step 3: Cross multiply
    15,786.08x = 21,787.44 × 9,499.04
  4. Step 4: Simplify right side
    15,786.08x = 206,959,764.06
  5. Step 5: Solve for x
    x = 206,959,764.06/15,786.08
  6. Step 6: Final answer
    x = 13,110.27

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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.