Home / 20,807.21-28,716.47-11,734.30

Finding the Fourth Proportional to 20,807.21, 28,716.47 and 11,734.30

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Solution

The fourth proportional to 20,807.21, 28,716.47 and 11,734.30 is: 16,194.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.21 : 28,716.47 = 11,734.30 : x
  2. Step 2: Convert to fraction form
    20,807.21/28,716.47 = 11,734.30/x
  3. Step 3: Cross multiply
    20,807.21x = 28,716.47 × 11,734.30
  4. Step 4: Simplify right side
    20,807.21x = 336,967,673.92
  5. Step 5: Solve for x
    x = 336,967,673.92/20,807.21
  6. Step 6: Final answer
    x = 16,194.76

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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.