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Finding the Fourth Proportional to 22,293.52, 30,769.60 and 12,860.80

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Solution

The fourth proportional to 22,293.52, 30,769.60 and 12,860.80 is: 17,750.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,293.52 : 30,769.60 = 12,860.80 : x
  2. Step 2: Convert to fraction form
    22,293.52/30,769.60 = 12,860.80/x
  3. Step 3: Cross multiply
    22,293.52x = 30,769.60 × 12,860.80
  4. Step 4: Simplify right side
    22,293.52x = 395,721,671.68
  5. Step 5: Solve for x
    x = 395,721,671.68/22,293.52
  6. Step 6: Final answer
    x = 17,750.52

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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.