Home / 19,811.82-27,335.84-13,439.28

Finding the Fourth Proportional to 19,811.82, 27,335.84 and 13,439.28

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Solution

The fourth proportional to 19,811.82, 27,335.84 and 13,439.28 is: 18,543.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.82 : 27,335.84 = 13,439.28 : x
  2. Step 2: Convert to fraction form
    19,811.82/27,335.84 = 13,439.28/x
  3. Step 3: Cross multiply
    19,811.82x = 27,335.84 × 13,439.28
  4. Step 4: Simplify right side
    19,811.82x = 367,374,007.80
  5. Step 5: Solve for x
    x = 367,374,007.80/19,811.82
  6. Step 6: Final answer
    x = 18,543.17

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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.