Home / 20,209.47-27,889.56-11,257.12

Finding the Fourth Proportional to 20,209.47, 27,889.56 and 11,257.12

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Solution

The fourth proportional to 20,209.47, 27,889.56 and 11,257.12 is: 15,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.47 : 27,889.56 = 11,257.12 : x
  2. Step 2: Convert to fraction form
    20,209.47/27,889.56 = 11,257.12/x
  3. Step 3: Cross multiply
    20,209.47x = 27,889.56 × 11,257.12
  4. Step 4: Simplify right side
    20,209.47x = 313,956,158.53
  5. Step 5: Solve for x
    x = 313,956,158.53/20,209.47
  6. Step 6: Final answer
    x = 15,535.10

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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.