Home / 21,082.63-31,620.69-11,571.61

Finding the Fourth Proportional to 21,082.63, 31,620.69 and 11,571.61

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Solution

The fourth proportional to 21,082.63, 31,620.69 and 11,571.61 is: 17,355.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.63 : 31,620.69 = 11,571.61 : x
  2. Step 2: Convert to fraction form
    21,082.63/31,620.69 = 11,571.61/x
  3. Step 3: Cross multiply
    21,082.63x = 31,620.69 × 11,571.61
  4. Step 4: Simplify right side
    21,082.63x = 365,902,292.61
  5. Step 5: Solve for x
    x = 365,902,292.61/21,082.63
  6. Step 6: Final answer
    x = 17,355.63

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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.