Home / 21,930.60-32,906.70-8,783.40

Finding the Fourth Proportional to 21,930.60, 32,906.70 and 8,783.40

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Solution

The fourth proportional to 21,930.60, 32,906.70 and 8,783.40 is: 13,179.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.60 : 32,906.70 = 8,783.40 : x
  2. Step 2: Convert to fraction form
    21,930.60/32,906.70 = 8,783.40/x
  3. Step 3: Cross multiply
    21,930.60x = 32,906.70 × 8,783.40
  4. Step 4: Simplify right side
    21,930.60x = 289,032,708.78
  5. Step 5: Solve for x
    x = 289,032,708.78/21,930.60
  6. Step 6: Final answer
    x = 13,179.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.