Home / 20,814.62-31,057.70-18,844.70

Finding the Fourth Proportional to 20,814.62, 31,057.70 and 18,844.70

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Solution

The fourth proportional to 20,814.62, 31,057.70 and 18,844.70 is: 28,118.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.62 : 31,057.70 = 18,844.70 : x
  2. Step 2: Convert to fraction form
    20,814.62/31,057.70 = 18,844.70/x
  3. Step 3: Cross multiply
    20,814.62x = 31,057.70 × 18,844.70
  4. Step 4: Simplify right side
    20,814.62x = 585,273,039.19
  5. Step 5: Solve for x
    x = 585,273,039.19/20,814.62
  6. Step 6: Final answer
    x = 28,118.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.