Home / 19,961.88-27,549-11,011.20

Finding the Fourth Proportional to 19,961.88, 27,549 and 11,011.20

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Solution

The fourth proportional to 19,961.88, 27,549 and 11,011.20 is: 15,196.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,961.88 : 27,549 = 11,011.20 : x
  2. Step 2: Convert to fraction form
    19,961.88/27,549 = 11,011.20/x
  3. Step 3: Cross multiply
    19,961.88x = 27,549 × 11,011.20
  4. Step 4: Simplify right side
    19,961.88x = 303,347,548.80
  5. Step 5: Solve for x
    x = 303,347,548.80/19,961.88
  6. Step 6: Final answer
    x = 15,196.34

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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.