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Finding the Fourth Proportional to 9,019.10, 13,532.70 and 4,086.20

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Solution

The fourth proportional to 9,019.10, 13,532.70 and 4,086.20 is: 6,131.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,019.10 : 13,532.70 = 4,086.20 : x
  2. Step 2: Convert to fraction form
    9,019.10/13,532.70 = 4,086.20/x
  3. Step 3: Cross multiply
    9,019.10x = 13,532.70 × 4,086.20
  4. Step 4: Simplify right side
    9,019.10x = 55,297,318.74
  5. Step 5: Solve for x
    x = 55,297,318.74/9,019.10
  6. Step 6: Final answer
    x = 6,131.13

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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.