Home / 27,797.76-38,365.38-15,861.60

Finding the Fourth Proportional to 27,797.76, 38,365.38 and 15,861.60

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Solution

The fourth proportional to 27,797.76, 38,365.38 and 15,861.60 is: 21,891.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,797.76 : 38,365.38 = 15,861.60 : x
  2. Step 2: Convert to fraction form
    27,797.76/38,365.38 = 15,861.60/x
  3. Step 3: Cross multiply
    27,797.76x = 38,365.38 × 15,861.60
  4. Step 4: Simplify right side
    27,797.76x = 608,536,311.41
  5. Step 5: Solve for x
    x = 608,536,311.41/27,797.76
  6. Step 6: Final answer
    x = 21,891.56

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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.