Home / 21,285.12-31,926.96-5,702.64

Finding the Fourth Proportional to 21,285.12, 31,926.96 and 5,702.64

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Solution

The fourth proportional to 21,285.12, 31,926.96 and 5,702.64 is: 8,553.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.12 : 31,926.96 = 5,702.64 : x
  2. Step 2: Convert to fraction form
    21,285.12/31,926.96 = 5,702.64/x
  3. Step 3: Cross multiply
    21,285.12x = 31,926.96 × 5,702.64
  4. Step 4: Simplify right side
    21,285.12x = 182,067,959.17
  5. Step 5: Solve for x
    x = 182,067,959.17/21,285.12
  6. Step 6: Final answer
    x = 8,553.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.