Home / 21,815.40-32,714.82-9,327.60

Finding the Fourth Proportional to 21,815.40, 32,714.82 and 9,327.60

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Solution

The fourth proportional to 21,815.40, 32,714.82 and 9,327.60 is: 13,987.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,815.40 : 32,714.82 = 9,327.60 : x
  2. Step 2: Convert to fraction form
    21,815.40/32,714.82 = 9,327.60/x
  3. Step 3: Cross multiply
    21,815.40x = 32,714.82 × 9,327.60
  4. Step 4: Simplify right side
    21,815.40x = 305,150,755.03
  5. Step 5: Solve for x
    x = 305,150,755.03/21,815.40
  6. Step 6: Final answer
    x = 13,987.86

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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.