Home / 20,071.50-27,698.05-11,118.80

Finding the Fourth Proportional to 20,071.50, 27,698.05 and 11,118.80

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Solution

The fourth proportional to 20,071.50, 27,698.05 and 11,118.80 is: 15,343.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.50 : 27,698.05 = 11,118.80 : x
  2. Step 2: Convert to fraction form
    20,071.50/27,698.05 = 11,118.80/x
  3. Step 3: Cross multiply
    20,071.50x = 27,698.05 × 11,118.80
  4. Step 4: Simplify right side
    20,071.50x = 307,969,161.48
  5. Step 5: Solve for x
    x = 307,969,161.48/20,071.50
  6. Step 6: Final answer
    x = 15,343.61

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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.