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Finding the Fourth Proportional to 9,900.45, 14,866.07 and 8,529.12

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Solution

The fourth proportional to 9,900.45, 14,866.07 and 8,529.12 is: 12,806.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.45 : 14,866.07 = 8,529.12 : x
  2. Step 2: Convert to fraction form
    9,900.45/14,866.07 = 8,529.12/x
  3. Step 3: Cross multiply
    9,900.45x = 14,866.07 × 8,529.12
  4. Step 4: Simplify right side
    9,900.45x = 126,794,452.31
  5. Step 5: Solve for x
    x = 126,794,452.31/9,900.45
  6. Step 6: Final answer
    x = 12,806.94

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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.