Home / 27,786.54-38,345.08-15,039.42

Finding the Fourth Proportional to 27,786.54, 38,345.08 and 15,039.42

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Solution

The fourth proportional to 27,786.54, 38,345.08 and 15,039.42 is: 20,754.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,786.54 : 38,345.08 = 15,039.42 : x
  2. Step 2: Convert to fraction form
    27,786.54/38,345.08 = 15,039.42/x
  3. Step 3: Cross multiply
    27,786.54x = 38,345.08 × 15,039.42
  4. Step 4: Simplify right side
    27,786.54x = 576,687,763.05
  5. Step 5: Solve for x
    x = 576,687,763.05/27,786.54
  6. Step 6: Final answer
    x = 20,754.21

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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.