Home / 21,624.48-32,224.77-20,919.78

Finding the Fourth Proportional to 21,624.48, 32,224.77 and 20,919.78

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Solution

The fourth proportional to 21,624.48, 32,224.77 and 20,919.78 is: 31,174.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.48 : 32,224.77 = 20,919.78 : x
  2. Step 2: Convert to fraction form
    21,624.48/32,224.77 = 20,919.78/x
  3. Step 3: Cross multiply
    21,624.48x = 32,224.77 × 20,919.78
  4. Step 4: Simplify right side
    21,624.48x = 674,135,098.95
  5. Step 5: Solve for x
    x = 674,135,098.95/21,624.48
  6. Step 6: Final answer
    x = 31,174.63

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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.