Home / 27,863.75-38,501.79-20,722.51

Finding the Fourth Proportional to 27,863.75, 38,501.79 and 20,722.51

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Solution

The fourth proportional to 27,863.75, 38,501.79 and 20,722.51 is: 28,634.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,863.75 : 38,501.79 = 20,722.51 : x
  2. Step 2: Convert to fraction form
    27,863.75/38,501.79 = 20,722.51/x
  3. Step 3: Cross multiply
    27,863.75x = 38,501.79 × 20,722.51
  4. Step 4: Simplify right side
    27,863.75x = 797,853,736.13
  5. Step 5: Solve for x
    x = 797,853,736.13/27,863.75
  6. Step 6: Final answer
    x = 28,634.12

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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.