Home / 21,146.30-29,185-12,192.05

Finding the Fourth Proportional to 21,146.30, 29,185 and 12,192.05

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Solution

The fourth proportional to 21,146.30, 29,185 and 12,192.05 is: 16,826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.30 : 29,185 = 12,192.05 : x
  2. Step 2: Convert to fraction form
    21,146.30/29,185 = 12,192.05/x
  3. Step 3: Cross multiply
    21,146.30x = 29,185 × 12,192.05
  4. Step 4: Simplify right side
    21,146.30x = 355,824,979.25
  5. Step 5: Solve for x
    x = 355,824,979.25/21,146.30
  6. Step 6: Final answer
    x = 16,826.82

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