Home / 20,939.44-28,898.46-11,988.22

Finding the Fourth Proportional to 20,939.44, 28,898.46 and 11,988.22

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Solution

The fourth proportional to 20,939.44, 28,898.46 and 11,988.22 is: 16,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.44 : 28,898.46 = 11,988.22 : x
  2. Step 2: Convert to fraction form
    20,939.44/28,898.46 = 11,988.22/x
  3. Step 3: Cross multiply
    20,939.44x = 28,898.46 × 11,988.22
  4. Step 4: Simplify right side
    20,939.44x = 346,440,891.71
  5. Step 5: Solve for x
    x = 346,440,891.71/20,939.44
  6. Step 6: Final answer
    x = 16,544.90

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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.