Home / 21,520.48-32,329.92-20,635.84

Finding the Fourth Proportional to 21,520.48, 32,329.92 and 20,635.84

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Solution

The fourth proportional to 21,520.48, 32,329.92 and 20,635.84 is: 31,000.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.48 : 32,329.92 = 20,635.84 : x
  2. Step 2: Convert to fraction form
    21,520.48/32,329.92 = 20,635.84/x
  3. Step 3: Cross multiply
    21,520.48x = 32,329.92 × 20,635.84
  4. Step 4: Simplify right side
    21,520.48x = 667,155,056.33
  5. Step 5: Solve for x
    x = 667,155,056.33/21,520.48
  6. Step 6: Final answer
    x = 31,000.94

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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.