Home / 27,661.95-38,173.41-15,086.70

Finding the Fourth Proportional to 27,661.95, 38,173.41 and 15,086.70

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Solution

The fourth proportional to 27,661.95, 38,173.41 and 15,086.70 is: 20,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,661.95 : 38,173.41 = 15,086.70 : x
  2. Step 2: Convert to fraction form
    27,661.95/38,173.41 = 15,086.70/x
  3. Step 3: Cross multiply
    27,661.95x = 38,173.41 × 15,086.70
  4. Step 4: Simplify right side
    27,661.95x = 575,910,784.65
  5. Step 5: Solve for x
    x = 575,910,784.65/27,661.95
  6. Step 6: Final answer
    x = 20,819.60

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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.