Home / 21,382.92-29,509.38-11,951.48

Finding the Fourth Proportional to 21,382.92, 29,509.38 and 11,951.48

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Solution

The fourth proportional to 21,382.92, 29,509.38 and 11,951.48 is: 16,493.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.92 : 29,509.38 = 11,951.48 : x
  2. Step 2: Convert to fraction form
    21,382.92/29,509.38 = 11,951.48/x
  3. Step 3: Cross multiply
    21,382.92x = 29,509.38 × 11,951.48
  4. Step 4: Simplify right side
    21,382.92x = 352,680,838.66
  5. Step 5: Solve for x
    x = 352,680,838.66/21,382.92
  6. Step 6: Final answer
    x = 16,493.58

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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.