Home / 21,985.95-32,982.39-7,191.39

Finding the Fourth Proportional to 21,985.95, 32,982.39 and 7,191.39

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Solution

The fourth proportional to 21,985.95, 32,982.39 and 7,191.39 is: 10,788.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.95 : 32,982.39 = 7,191.39 : x
  2. Step 2: Convert to fraction form
    21,985.95/32,982.39 = 7,191.39/x
  3. Step 3: Cross multiply
    21,985.95x = 32,982.39 × 7,191.39
  4. Step 4: Simplify right side
    21,985.95x = 237,189,229.62
  5. Step 5: Solve for x
    x = 237,189,229.62/21,985.95
  6. Step 6: Final answer
    x = 10,788.22

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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.