Home / 21,084.92-31,632.78-7,941.08

Finding the Fourth Proportional to 21,084.92, 31,632.78 and 7,941.08

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Solution

The fourth proportional to 21,084.92, 31,632.78 and 7,941.08 is: 11,913.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.92 : 31,632.78 = 7,941.08 : x
  2. Step 2: Convert to fraction form
    21,084.92/31,632.78 = 7,941.08/x
  3. Step 3: Cross multiply
    21,084.92x = 31,632.78 × 7,941.08
  4. Step 4: Simplify right side
    21,084.92x = 251,198,436.60
  5. Step 5: Solve for x
    x = 251,198,436.60/21,084.92
  6. Step 6: Final answer
    x = 11,913.65

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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.