Home / 20,493.54-28,288.17-12,109.50

Finding the Fourth Proportional to 20,493.54, 28,288.17 and 12,109.50

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Solution

The fourth proportional to 20,493.54, 28,288.17 and 12,109.50 is: 16,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493.54 : 28,288.17 = 12,109.50 : x
  2. Step 2: Convert to fraction form
    20,493.54/28,288.17 = 12,109.50/x
  3. Step 3: Cross multiply
    20,493.54x = 28,288.17 × 12,109.50
  4. Step 4: Simplify right side
    20,493.54x = 342,555,594.62
  5. Step 5: Solve for x
    x = 342,555,594.62/20,493.54
  6. Step 6: Final answer
    x = 16,715.30

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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.