Home / 27,992.78-38,637.97-18,439.64

Finding the Fourth Proportional to 27,992.78, 38,637.97 and 18,439.64

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Solution

The fourth proportional to 27,992.78, 38,637.97 and 18,439.64 is: 25,451.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,992.78 : 38,637.97 = 18,439.64 : x
  2. Step 2: Convert to fraction form
    27,992.78/38,637.97 = 18,439.64/x
  3. Step 3: Cross multiply
    27,992.78x = 38,637.97 × 18,439.64
  4. Step 4: Simplify right side
    27,992.78x = 712,470,017.84
  5. Step 5: Solve for x
    x = 712,470,017.84/27,992.78
  6. Step 6: Final answer
    x = 25,451.93

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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.