Home / 19,619.88-27,078.48-13,886.16

Finding the Fourth Proportional to 19,619.88, 27,078.48 and 13,886.16

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Solution

The fourth proportional to 19,619.88, 27,078.48 and 13,886.16 is: 19,165.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.88 : 27,078.48 = 13,886.16 : x
  2. Step 2: Convert to fraction form
    19,619.88/27,078.48 = 13,886.16/x
  3. Step 3: Cross multiply
    19,619.88x = 27,078.48 × 13,886.16
  4. Step 4: Simplify right side
    19,619.88x = 376,016,105.84
  5. Step 5: Solve for x
    x = 376,016,105.84/19,619.88
  6. Step 6: Final answer
    x = 19,165.06

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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.