Home / 15,231.12-21,012.76-9,924

Finding the Fourth Proportional to 15,231.12, 21,012.76 and 9,924

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Solution

The fourth proportional to 15,231.12, 21,012.76 and 9,924 is: 13,691.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.12 : 21,012.76 = 9,924 : x
  2. Step 2: Convert to fraction form
    15,231.12/21,012.76 = 9,924/x
  3. Step 3: Cross multiply
    15,231.12x = 21,012.76 × 9,924
  4. Step 4: Simplify right side
    15,231.12x = 208,530,630.24
  5. Step 5: Solve for x
    x = 208,530,630.24/15,231.12
  6. Step 6: Final answer
    x = 13,691.09

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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.