Home / 20,727.70-31,065.50-11,239.66

Finding the Fourth Proportional to 20,727.70, 31,065.50 and 11,239.66

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Solution

The fourth proportional to 20,727.70, 31,065.50 and 11,239.66 is: 16,845.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.70 : 31,065.50 = 11,239.66 : x
  2. Step 2: Convert to fraction form
    20,727.70/31,065.50 = 11,239.66/x
  3. Step 3: Cross multiply
    20,727.70x = 31,065.50 × 11,239.66
  4. Step 4: Simplify right side
    20,727.70x = 349,165,693.05
  5. Step 5: Solve for x
    x = 349,165,693.05/20,727.70
  6. Step 6: Final answer
    x = 16,845.37

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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.