Home / 27,815.75-38,403.26-19,315.16

Finding the Fourth Proportional to 27,815.75, 38,403.26 and 19,315.16

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Solution

The fourth proportional to 27,815.75, 38,403.26 and 19,315.16 is: 26,667.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.75 : 38,403.26 = 19,315.16 : x
  2. Step 2: Convert to fraction form
    27,815.75/38,403.26 = 19,315.16/x
  3. Step 3: Cross multiply
    27,815.75x = 38,403.26 × 19,315.16
  4. Step 4: Simplify right side
    27,815.75x = 741,765,147.92
  5. Step 5: Solve for x
    x = 741,765,147.92/27,815.75
  6. Step 6: Final answer
    x = 26,667.09

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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.