Home / 15,424-21,285.12-8,800

Finding the Fourth Proportional to 15,424, 21,285.12 and 8,800

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Solution

The fourth proportional to 15,424, 21,285.12 and 8,800 is: 12,144

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424 : 21,285.12 = 8,800 : x
  2. Step 2: Convert to fraction form
    15,424/21,285.12 = 8,800/x
  3. Step 3: Cross multiply
    15,424x = 21,285.12 × 8,800
  4. Step 4: Simplify right side
    15,424x = 187,309,056
  5. Step 5: Solve for x
    x = 187,309,056/15,424
  6. Step 6: Final answer
    x = 12,144

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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.