Home / 36,789.60-55,075.05-21,990.90

Finding the Fourth Proportional to 36,789.60, 55,075.05 and 21,990.90

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Solution

The fourth proportional to 36,789.60, 55,075.05 and 21,990.90 is: 32,920.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,789.60 : 55,075.05 = 21,990.90 : x
  2. Step 2: Convert to fraction form
    36,789.60/55,075.05 = 21,990.90/x
  3. Step 3: Cross multiply
    36,789.60x = 55,075.05 × 21,990.90
  4. Step 4: Simplify right side
    36,789.60x = 1,211,149,917.05
  5. Step 5: Solve for x
    x = 1,211,149,917.05/36,789.60
  6. Step 6: Final answer
    x = 32,920.99

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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.