Home / 19,579.89-27,020.18-11,081.78

Finding the Fourth Proportional to 19,579.89, 27,020.18 and 11,081.78

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Solution

The fourth proportional to 19,579.89, 27,020.18 and 11,081.78 is: 15,292.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.89 : 27,020.18 = 11,081.78 : x
  2. Step 2: Convert to fraction form
    19,579.89/27,020.18 = 11,081.78/x
  3. Step 3: Cross multiply
    19,579.89x = 27,020.18 × 11,081.78
  4. Step 4: Simplify right side
    19,579.89x = 299,431,690.32
  5. Step 5: Solve for x
    x = 299,431,690.32/19,579.89
  6. Step 6: Final answer
    x = 15,292.82

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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.