Home / 21,284.12-31,940.76-7,433.12

Finding the Fourth Proportional to 21,284.12, 31,940.76 and 7,433.12

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Solution

The fourth proportional to 21,284.12, 31,940.76 and 7,433.12 is: 11,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.12 : 31,940.76 = 7,433.12 : x
  2. Step 2: Convert to fraction form
    21,284.12/31,940.76 = 7,433.12/x
  3. Step 3: Cross multiply
    21,284.12x = 31,940.76 × 7,433.12
  4. Step 4: Simplify right side
    21,284.12x = 237,419,501.97
  5. Step 5: Solve for x
    x = 237,419,501.97/21,284.12
  6. Step 6: Final answer
    x = 11,154.77

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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.