Home / 15,424.15-21,285.33-8,350.57

Finding the Fourth Proportional to 15,424.15, 21,285.33 and 8,350.57

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Solution

The fourth proportional to 15,424.15, 21,285.33 and 8,350.57 is: 11,523.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.15 : 21,285.33 = 8,350.57 : x
  2. Step 2: Convert to fraction form
    15,424.15/21,285.33 = 8,350.57/x
  3. Step 3: Cross multiply
    15,424.15x = 21,285.33 × 8,350.57
  4. Step 4: Simplify right side
    15,424.15x = 177,744,584.92
  5. Step 5: Solve for x
    x = 177,744,584.92/15,424.15
  6. Step 6: Final answer
    x = 11,523.79

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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.