Home / 20,200.82-27,875.75-11,248.08

Finding the Fourth Proportional to 20,200.82, 27,875.75 and 11,248.08

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Solution

The fourth proportional to 20,200.82, 27,875.75 and 11,248.08 is: 15,521.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.82 : 27,875.75 = 11,248.08 : x
  2. Step 2: Convert to fraction form
    20,200.82/27,875.75 = 11,248.08/x
  3. Step 3: Cross multiply
    20,200.82x = 27,875.75 × 11,248.08
  4. Step 4: Simplify right side
    20,200.82x = 313,548,609.82
  5. Step 5: Solve for x
    x = 313,548,609.82/20,200.82
  6. Step 6: Final answer
    x = 15,521.58

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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.