Home / 15,227.45-21,014.31-8,513.83

Finding the Fourth Proportional to 15,227.45, 21,014.31 and 8,513.83

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Solution

The fourth proportional to 15,227.45, 21,014.31 and 8,513.83 is: 11,749.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.45 : 21,014.31 = 8,513.83 : x
  2. Step 2: Convert to fraction form
    15,227.45/21,014.31 = 8,513.83/x
  3. Step 3: Cross multiply
    15,227.45x = 21,014.31 × 8,513.83
  4. Step 4: Simplify right side
    15,227.45x = 178,912,262.91
  5. Step 5: Solve for x
    x = 178,912,262.91/15,227.45
  6. Step 6: Final answer
    x = 11,749.33

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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.