Home / 20,203.08-27,880.21-11,251.36

Finding the Fourth Proportional to 20,203.08, 27,880.21 and 11,251.36

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Solution

The fourth proportional to 20,203.08, 27,880.21 and 11,251.36 is: 15,526.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.08 : 27,880.21 = 11,251.36 : x
  2. Step 2: Convert to fraction form
    20,203.08/27,880.21 = 11,251.36/x
  3. Step 3: Cross multiply
    20,203.08x = 27,880.21 × 11,251.36
  4. Step 4: Simplify right side
    20,203.08x = 313,690,279.59
  5. Step 5: Solve for x
    x = 313,690,279.59/20,203.08
  6. Step 6: Final answer
    x = 15,526.85

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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.