Home / 20,261.88-27,966.06-11,881.08

Finding the Fourth Proportional to 20,261.88, 27,966.06 and 11,881.08

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Solution

The fourth proportional to 20,261.88, 27,966.06 and 11,881.08 is: 16,398.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.88 : 27,966.06 = 11,881.08 : x
  2. Step 2: Convert to fraction form
    20,261.88/27,966.06 = 11,881.08/x
  3. Step 3: Cross multiply
    20,261.88x = 27,966.06 × 11,881.08
  4. Step 4: Simplify right side
    20,261.88x = 332,266,996.14
  5. Step 5: Solve for x
    x = 332,266,996.14/20,261.88
  6. Step 6: Final answer
    x = 16,398.63

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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.