Home / 20,460.06-28,234.92-11,507.58

Finding the Fourth Proportional to 20,460.06, 28,234.92 and 11,507.58

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Solution

The fourth proportional to 20,460.06, 28,234.92 and 11,507.58 is: 15,880.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.06 : 28,234.92 = 11,507.58 : x
  2. Step 2: Convert to fraction form
    20,460.06/28,234.92 = 11,507.58/x
  3. Step 3: Cross multiply
    20,460.06x = 28,234.92 × 11,507.58
  4. Step 4: Simplify right side
    20,460.06x = 324,915,600.69
  5. Step 5: Solve for x
    x = 324,915,600.69/20,460.06
  6. Step 6: Final answer
    x = 15,880.48

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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.