Home / 15,216.06-20,998.10-8,409.89

Finding the Fourth Proportional to 15,216.06, 20,998.10 and 8,409.89

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Solution

The fourth proportional to 15,216.06, 20,998.10 and 8,409.89 is: 11,605.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.06 : 20,998.10 = 8,409.89 : x
  2. Step 2: Convert to fraction form
    15,216.06/20,998.10 = 8,409.89/x
  3. Step 3: Cross multiply
    15,216.06x = 20,998.10 × 8,409.89
  4. Step 4: Simplify right side
    15,216.06x = 176,591,711.21
  5. Step 5: Solve for x
    x = 176,591,711.21/15,216.06
  6. Step 6: Final answer
    x = 11,605.61

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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.