Home / 21,947.40-32,945.40-13,636.80

Finding the Fourth Proportional to 21,947.40, 32,945.40 and 13,636.80

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Solution

The fourth proportional to 21,947.40, 32,945.40 and 13,636.80 is: 20,470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.40 : 32,945.40 = 13,636.80 : x
  2. Step 2: Convert to fraction form
    21,947.40/32,945.40 = 13,636.80/x
  3. Step 3: Cross multiply
    21,947.40x = 32,945.40 × 13,636.80
  4. Step 4: Simplify right side
    21,947.40x = 449,269,830.72
  5. Step 5: Solve for x
    x = 449,269,830.72/21,947.40
  6. Step 6: Final answer
    x = 20,470.30

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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.