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Finding the Fourth Proportional to 19,992.10, 27,589.02 and 10,918.06

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Solution

The fourth proportional to 19,992.10, 27,589.02 and 10,918.06 is: 15,066.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.10 : 27,589.02 = 10,918.06 : x
  2. Step 2: Convert to fraction form
    19,992.10/27,589.02 = 10,918.06/x
  3. Step 3: Cross multiply
    19,992.10x = 27,589.02 × 10,918.06
  4. Step 4: Simplify right side
    19,992.10x = 301,218,575.70
  5. Step 5: Solve for x
    x = 301,218,575.70/19,992.10
  6. Step 6: Final answer
    x = 15,066.88

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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.