Home / 19,987.68-27,591.21-13,635.24

Finding the Fourth Proportional to 19,987.68, 27,591.21 and 13,635.24

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Solution

The fourth proportional to 19,987.68, 27,591.21 and 13,635.24 is: 18,822.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.68 : 27,591.21 = 13,635.24 : x
  2. Step 2: Convert to fraction form
    19,987.68/27,591.21 = 13,635.24/x
  3. Step 3: Cross multiply
    19,987.68x = 27,591.21 × 13,635.24
  4. Step 4: Simplify right side
    19,987.68x = 376,212,770.24
  5. Step 5: Solve for x
    x = 376,212,770.24/19,987.68
  6. Step 6: Final answer
    x = 18,822.23

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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.