Home / 21,947.60-32,921.40-21,299.60

Finding the Fourth Proportional to 21,947.60, 32,921.40 and 21,299.60

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Solution

The fourth proportional to 21,947.60, 32,921.40 and 21,299.60 is: 31,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.60 : 32,921.40 = 21,299.60 : x
  2. Step 2: Convert to fraction form
    21,947.60/32,921.40 = 21,299.60/x
  3. Step 3: Cross multiply
    21,947.60x = 32,921.40 × 21,299.60
  4. Step 4: Simplify right side
    21,947.60x = 701,212,651.44
  5. Step 5: Solve for x
    x = 701,212,651.44/21,947.60
  6. Step 6: Final answer
    x = 31,949.40

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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.