Home / 21,151.06-29,188.44-11,591.18

Finding the Fourth Proportional to 21,151.06, 29,188.44 and 11,591.18

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Solution

The fourth proportional to 21,151.06, 29,188.44 and 11,591.18 is: 15,995.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.06 : 29,188.44 = 11,591.18 : x
  2. Step 2: Convert to fraction form
    21,151.06/29,188.44 = 11,591.18/x
  3. Step 3: Cross multiply
    21,151.06x = 29,188.44 × 11,591.18
  4. Step 4: Simplify right side
    21,151.06x = 338,328,461.96
  5. Step 5: Solve for x
    x = 338,328,461.96/21,151.06
  6. Step 6: Final answer
    x = 15,995.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.