Home / 28,212.76-38,928.18-16,276.60

Finding the Fourth Proportional to 28,212.76, 38,928.18 and 16,276.60

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Solution

The fourth proportional to 28,212.76, 38,928.18 and 16,276.60 is: 22,458.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.76 : 38,928.18 = 16,276.60 : x
  2. Step 2: Convert to fraction form
    28,212.76/38,928.18 = 16,276.60/x
  3. Step 3: Cross multiply
    28,212.76x = 38,928.18 × 16,276.60
  4. Step 4: Simplify right side
    28,212.76x = 633,618,414.59
  5. Step 5: Solve for x
    x = 633,618,414.59/28,212.76
  6. Step 6: Final answer
    x = 22,458.58

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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.