Home / 21,465.72-32,163.50-20,645.60

Finding the Fourth Proportional to 21,465.72, 32,163.50 and 20,645.60

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Solution

The fourth proportional to 21,465.72, 32,163.50 and 20,645.60 is: 30,934.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,465.72 : 32,163.50 = 20,645.60 : x
  2. Step 2: Convert to fraction form
    21,465.72/32,163.50 = 20,645.60/x
  3. Step 3: Cross multiply
    21,465.72x = 32,163.50 × 20,645.60
  4. Step 4: Simplify right side
    21,465.72x = 664,034,755.60
  5. Step 5: Solve for x
    x = 664,034,755.60/21,465.72
  6. Step 6: Final answer
    x = 30,934.66

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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.