Home / 20,203.16-27,880.81-11,251.58

Finding the Fourth Proportional to 20,203.16, 27,880.81 and 11,251.58

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Solution

The fourth proportional to 20,203.16, 27,880.81 and 11,251.58 is: 15,527.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.16 : 27,880.81 = 11,251.58 : x
  2. Step 2: Convert to fraction form
    20,203.16/27,880.81 = 11,251.58/x
  3. Step 3: Cross multiply
    20,203.16x = 27,880.81 × 11,251.58
  4. Step 4: Simplify right side
    20,203.16x = 313,702,996.65
  5. Step 5: Solve for x
    x = 313,702,996.65/20,203.16
  6. Step 6: Final answer
    x = 15,527.43

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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.