Home / 21,454.97-29,608.56-11,894.72

Finding the Fourth Proportional to 21,454.97, 29,608.56 and 11,894.72

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Solution

The fourth proportional to 21,454.97, 29,608.56 and 11,894.72 is: 16,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.97 : 29,608.56 = 11,894.72 : x
  2. Step 2: Convert to fraction form
    21,454.97/29,608.56 = 11,894.72/x
  3. Step 3: Cross multiply
    21,454.97x = 29,608.56 × 11,894.72
  4. Step 4: Simplify right side
    21,454.97x = 352,185,382.76
  5. Step 5: Solve for x
    x = 352,185,382.76/21,454.97
  6. Step 6: Final answer
    x = 16,415.10

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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.