Home / 20,278.40-27,835.26-17,990.25

Finding the Fourth Proportional to 20,278.40, 27,835.26 and 17,990.25

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Solution

The fourth proportional to 20,278.40, 27,835.26 and 17,990.25 is: 24,694.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.40 : 27,835.26 = 17,990.25 : x
  2. Step 2: Convert to fraction form
    20,278.40/27,835.26 = 17,990.25/x
  3. Step 3: Cross multiply
    20,278.40x = 27,835.26 × 17,990.25
  4. Step 4: Simplify right side
    20,278.40x = 500,763,296.24
  5. Step 5: Solve for x
    x = 500,763,296.24/20,278.40
  6. Step 6: Final answer
    x = 24,694.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.