Home / 21,985.14-32,982.32-7,192.90

Finding the Fourth Proportional to 21,985.14, 32,982.32 and 7,192.90

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Solution

The fourth proportional to 21,985.14, 32,982.32 and 7,192.90 is: 10,790.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.14 : 32,982.32 = 7,192.90 : x
  2. Step 2: Convert to fraction form
    21,985.14/32,982.32 = 7,192.90/x
  3. Step 3: Cross multiply
    21,985.14x = 32,982.32 × 7,192.90
  4. Step 4: Simplify right side
    21,985.14x = 237,238,465.05
  5. Step 5: Solve for x
    x = 237,238,465.05/21,985.14
  6. Step 6: Final answer
    x = 10,790.86

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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.