Home / 21,786.04-30,072.78-13,833.40

Finding the Fourth Proportional to 21,786.04, 30,072.78 and 13,833.40

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Solution

The fourth proportional to 21,786.04, 30,072.78 and 13,833.40 is: 19,095.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.04 : 30,072.78 = 13,833.40 : x
  2. Step 2: Convert to fraction form
    21,786.04/30,072.78 = 13,833.40/x
  3. Step 3: Cross multiply
    21,786.04x = 30,072.78 × 13,833.40
  4. Step 4: Simplify right side
    21,786.04x = 416,008,794.85
  5. Step 5: Solve for x
    x = 416,008,794.85/21,786.04
  6. Step 6: Final answer
    x = 19,095.20

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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.