Home / 26,279.62-39,350.43-20,990.26

Finding the Fourth Proportional to 26,279.62, 39,350.43 and 20,990.26

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Solution

The fourth proportional to 26,279.62, 39,350.43 and 20,990.26 is: 31,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,279.62 : 39,350.43 = 20,990.26 : x
  2. Step 2: Convert to fraction form
    26,279.62/39,350.43 = 20,990.26/x
  3. Step 3: Cross multiply
    26,279.62x = 39,350.43 × 20,990.26
  4. Step 4: Simplify right side
    26,279.62x = 825,975,756.81
  5. Step 5: Solve for x
    x = 825,975,756.81/26,279.62
  6. Step 6: Final answer
    x = 31,430.28

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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.