Home / 20,561.28-28,374.48-11,610.72

Finding the Fourth Proportional to 20,561.28, 28,374.48 and 11,610.72

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Solution

The fourth proportional to 20,561.28, 28,374.48 and 11,610.72 is: 16,022.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.28 : 28,374.48 = 11,610.72 : x
  2. Step 2: Convert to fraction form
    20,561.28/28,374.48 = 11,610.72/x
  3. Step 3: Cross multiply
    20,561.28x = 28,374.48 × 11,610.72
  4. Step 4: Simplify right side
    20,561.28x = 329,448,142.43
  5. Step 5: Solve for x
    x = 329,448,142.43/20,561.28
  6. Step 6: Final answer
    x = 16,022.74

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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.