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Finding the Fourth Proportional to 9,969.05, 14,975.85 and 8,328.80

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Solution

The fourth proportional to 9,969.05, 14,975.85 and 8,328.80 is: 12,511.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,969.05 : 14,975.85 = 8,328.80 : x
  2. Step 2: Convert to fraction form
    9,969.05/14,975.85 = 8,328.80/x
  3. Step 3: Cross multiply
    9,969.05x = 14,975.85 × 8,328.80
  4. Step 4: Simplify right side
    9,969.05x = 124,730,859.48
  5. Step 5: Solve for x
    x = 124,730,859.48/9,969.05
  6. Step 6: Final answer
    x = 12,511.81

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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.