Home / 20,206.66-27,885.20-11,255.88

Finding the Fourth Proportional to 20,206.66, 27,885.20 and 11,255.88

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Solution

The fourth proportional to 20,206.66, 27,885.20 and 11,255.88 is: 15,533.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.66 : 27,885.20 = 11,255.88 : x
  2. Step 2: Convert to fraction form
    20,206.66/27,885.20 = 11,255.88/x
  3. Step 3: Cross multiply
    20,206.66x = 27,885.20 × 11,255.88
  4. Step 4: Simplify right side
    20,206.66x = 313,872,464.98
  5. Step 5: Solve for x
    x = 313,872,464.98/20,206.66
  6. Step 6: Final answer
    x = 15,533.12

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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.