Home / 20,736.20-28,612.23-11,658.95

Finding the Fourth Proportional to 20,736.20, 28,612.23 and 11,658.95

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Solution

The fourth proportional to 20,736.20, 28,612.23 and 11,658.95 is: 16,087.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.20 : 28,612.23 = 11,658.95 : x
  2. Step 2: Convert to fraction form
    20,736.20/28,612.23 = 11,658.95/x
  3. Step 3: Cross multiply
    20,736.20x = 28,612.23 × 11,658.95
  4. Step 4: Simplify right side
    20,736.20x = 333,588,415.90
  5. Step 5: Solve for x
    x = 333,588,415.90/20,736.20
  6. Step 6: Final answer
    x = 16,087.25

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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.