Home / 20,503.42-28,296.81-12,550.90

Finding the Fourth Proportional to 20,503.42, 28,296.81 and 12,550.90

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Solution

The fourth proportional to 20,503.42, 28,296.81 and 12,550.90 is: 17,321.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.42 : 28,296.81 = 12,550.90 : x
  2. Step 2: Convert to fraction form
    20,503.42/28,296.81 = 12,550.90/x
  3. Step 3: Cross multiply
    20,503.42x = 28,296.81 × 12,550.90
  4. Step 4: Simplify right side
    20,503.42x = 355,150,432.63
  5. Step 5: Solve for x
    x = 355,150,432.63/20,503.42
  6. Step 6: Final answer
    x = 17,321.52

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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.