Home / 19,780.14-27,287.91-11,818.38

Finding the Fourth Proportional to 19,780.14, 27,287.91 and 11,818.38

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Solution

The fourth proportional to 19,780.14, 27,287.91 and 11,818.38 is: 16,304.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.14 : 27,287.91 = 11,818.38 : x
  2. Step 2: Convert to fraction form
    19,780.14/27,287.91 = 11,818.38/x
  3. Step 3: Cross multiply
    19,780.14x = 27,287.91 × 11,818.38
  4. Step 4: Simplify right side
    19,780.14x = 322,498,889.79
  5. Step 5: Solve for x
    x = 322,498,889.79/19,780.14
  6. Step 6: Final answer
    x = 16,304.18

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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.