Home / 20,295.60-28,016.55-12,340.37

Finding the Fourth Proportional to 20,295.60, 28,016.55 and 12,340.37

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Solution

The fourth proportional to 20,295.60, 28,016.55 and 12,340.37 is: 17,034.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.60 : 28,016.55 = 12,340.37 : x
  2. Step 2: Convert to fraction form
    20,295.60/28,016.55 = 12,340.37/x
  3. Step 3: Cross multiply
    20,295.60x = 28,016.55 × 12,340.37
  4. Step 4: Simplify right side
    20,295.60x = 345,734,453.04
  5. Step 5: Solve for x
    x = 345,734,453.04/20,295.60
  6. Step 6: Final answer
    x = 17,034.95

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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.