Home / 27,785.20-41,683.20-11,990.20

Finding the Fourth Proportional to 27,785.20, 41,683.20 and 11,990.20

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Solution

The fourth proportional to 27,785.20, 41,683.20 and 11,990.20 is: 17,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.20 : 41,683.20 = 11,990.20 : x
  2. Step 2: Convert to fraction form
    27,785.20/41,683.20 = 11,990.20/x
  3. Step 3: Cross multiply
    27,785.20x = 41,683.20 × 11,990.20
  4. Step 4: Simplify right side
    27,785.20x = 499,789,904.64
  5. Step 5: Solve for x
    x = 499,789,904.64/27,785.20
  6. Step 6: Final answer
    x = 17,987.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.