Home / 21,229.06-31,842.78-7,190.14

Finding the Fourth Proportional to 21,229.06, 31,842.78 and 7,190.14

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Solution

The fourth proportional to 21,229.06, 31,842.78 and 7,190.14 is: 10,784.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.06 : 31,842.78 = 7,190.14 : x
  2. Step 2: Convert to fraction form
    21,229.06/31,842.78 = 7,190.14/x
  3. Step 3: Cross multiply
    21,229.06x = 31,842.78 × 7,190.14
  4. Step 4: Simplify right side
    21,229.06x = 228,954,046.19
  5. Step 5: Solve for x
    x = 228,954,046.19/21,229.06
  6. Step 6: Final answer
    x = 10,784.94

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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.