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Finding the Fourth Proportional to 10,500.76, 15,751.14 and 7,203.86

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Solution

The fourth proportional to 10,500.76, 15,751.14 and 7,203.86 is: 10,805.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,500.76 : 15,751.14 = 7,203.86 : x
  2. Step 2: Convert to fraction form
    10,500.76/15,751.14 = 7,203.86/x
  3. Step 3: Cross multiply
    10,500.76x = 15,751.14 × 7,203.86
  4. Step 4: Simplify right side
    10,500.76x = 113,469,007.40
  5. Step 5: Solve for x
    x = 113,469,007.40/10,500.76
  6. Step 6: Final answer
    x = 10,805.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.