Home / 27,645.50-38,150.80-15,708.85

Finding the Fourth Proportional to 27,645.50, 38,150.80 and 15,708.85

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Solution

The fourth proportional to 27,645.50, 38,150.80 and 15,708.85 is: 21,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,645.50 : 38,150.80 = 15,708.85 : x
  2. Step 2: Convert to fraction form
    27,645.50/38,150.80 = 15,708.85/x
  3. Step 3: Cross multiply
    27,645.50x = 38,150.80 × 15,708.85
  4. Step 4: Simplify right side
    27,645.50x = 599,305,194.58
  5. Step 5: Solve for x
    x = 599,305,194.58/27,645.50
  6. Step 6: Final answer
    x = 21,678.22

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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.