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Finding the Fourth Proportional to 9,159.39, 13,738.01 and 7,212.15

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Solution

The fourth proportional to 9,159.39, 13,738.01 and 7,212.15 is: 10,817.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.39 : 13,738.01 = 7,212.15 : x
  2. Step 2: Convert to fraction form
    9,159.39/13,738.01 = 7,212.15/x
  3. Step 3: Cross multiply
    9,159.39x = 13,738.01 × 7,212.15
  4. Step 4: Simplify right side
    9,159.39x = 99,080,552.76
  5. Step 5: Solve for x
    x = 99,080,552.76/9,159.39
  6. Step 6: Final answer
    x = 10,817.37

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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.