Home / 27,667.69-38,180.10-15,729.72

Finding the Fourth Proportional to 27,667.69, 38,180.10 and 15,729.72

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Solution

The fourth proportional to 27,667.69, 38,180.10 and 15,729.72 is: 21,706.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,667.69 : 38,180.10 = 15,729.72 : x
  2. Step 2: Convert to fraction form
    27,667.69/38,180.10 = 15,729.72/x
  3. Step 3: Cross multiply
    27,667.69x = 38,180.10 × 15,729.72
  4. Step 4: Simplify right side
    27,667.69x = 600,562,282.57
  5. Step 5: Solve for x
    x = 600,562,282.57/27,667.69
  6. Step 6: Final answer
    x = 21,706.27

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Half scale
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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.