Home / 27,654.11-38,162.81-15,717.44

Finding the Fourth Proportional to 27,654.11, 38,162.81 and 15,717.44

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Solution

The fourth proportional to 27,654.11, 38,162.81 and 15,717.44 is: 21,690.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,654.11 : 38,162.81 = 15,717.44 : x
  2. Step 2: Convert to fraction form
    27,654.11/38,162.81 = 15,717.44/x
  3. Step 3: Cross multiply
    27,654.11x = 38,162.81 × 15,717.44
  4. Step 4: Simplify right side
    27,654.11x = 599,821,811.11
  5. Step 5: Solve for x
    x = 599,821,811.11/27,654.11
  6. Step 6: Final answer
    x = 21,690.15

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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.