Home / 21,293.88-29,382.66-11,861.16

Finding the Fourth Proportional to 21,293.88, 29,382.66 and 11,861.16

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Solution

The fourth proportional to 21,293.88, 29,382.66 and 11,861.16 is: 16,366.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,293.88 : 29,382.66 = 11,861.16 : x
  2. Step 2: Convert to fraction form
    21,293.88/29,382.66 = 11,861.16/x
  3. Step 3: Cross multiply
    21,293.88x = 29,382.66 × 11,861.16
  4. Step 4: Simplify right side
    21,293.88x = 348,512,431.49
  5. Step 5: Solve for x
    x = 348,512,431.49/21,293.88
  6. Step 6: Final answer
    x = 16,366.79

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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.