Home / 21,335.40-32,003.10-13,578.60

Finding the Fourth Proportional to 21,335.40, 32,003.10 and 13,578.60

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Solution

The fourth proportional to 21,335.40, 32,003.10 and 13,578.60 is: 20,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.40 : 32,003.10 = 13,578.60 : x
  2. Step 2: Convert to fraction form
    21,335.40/32,003.10 = 13,578.60/x
  3. Step 3: Cross multiply
    21,335.40x = 32,003.10 × 13,578.60
  4. Step 4: Simplify right side
    21,335.40x = 434,557,293.66
  5. Step 5: Solve for x
    x = 434,557,293.66/21,335.40
  6. Step 6: Final answer
    x = 20,367.90

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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.