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Finding the Fourth Proportional to 9,661.80, 14,492.70 and 7,474.80

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Solution

The fourth proportional to 9,661.80, 14,492.70 and 7,474.80 is: 11,212.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,661.80 : 14,492.70 = 7,474.80 : x
  2. Step 2: Convert to fraction form
    9,661.80/14,492.70 = 7,474.80/x
  3. Step 3: Cross multiply
    9,661.80x = 14,492.70 × 7,474.80
  4. Step 4: Simplify right side
    9,661.80x = 108,330,033.96
  5. Step 5: Solve for x
    x = 108,330,033.96/9,661.80
  6. Step 6: Final answer
    x = 11,212.20

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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.