Home / 20,633.28-28,473.17-11,201.64

Finding the Fourth Proportional to 20,633.28, 28,473.17 and 11,201.64

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Solution

The fourth proportional to 20,633.28, 28,473.17 and 11,201.64 is: 15,457.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.28 : 28,473.17 = 11,201.64 : x
  2. Step 2: Convert to fraction form
    20,633.28/28,473.17 = 11,201.64/x
  3. Step 3: Cross multiply
    20,633.28x = 28,473.17 × 11,201.64
  4. Step 4: Simplify right side
    20,633.28x = 318,946,143.99
  5. Step 5: Solve for x
    x = 318,946,143.99/20,633.28
  6. Step 6: Final answer
    x = 15,457.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.