Home / 21,935.68-32,906.25-7,140.62

Finding the Fourth Proportional to 21,935.68, 32,906.25 and 7,140.62

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Solution

The fourth proportional to 21,935.68, 32,906.25 and 7,140.62 is: 10,711.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.68 : 32,906.25 = 7,140.62 : x
  2. Step 2: Convert to fraction form
    21,935.68/32,906.25 = 7,140.62/x
  3. Step 3: Cross multiply
    21,935.68x = 32,906.25 × 7,140.62
  4. Step 4: Simplify right side
    21,935.68x = 234,971,109.14
  5. Step 5: Solve for x
    x = 234,971,109.14/21,935.68
  6. Step 6: Final answer
    x = 10,711.82

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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.