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Finding the Fourth Proportional to 10,364.82, 15,532.62 and 7,769.58

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Solution

The fourth proportional to 10,364.82, 15,532.62 and 7,769.58 is: 11,643.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,364.82 : 15,532.62 = 7,769.58 : x
  2. Step 2: Convert to fraction form
    10,364.82/15,532.62 = 7,769.58/x
  3. Step 3: Cross multiply
    10,364.82x = 15,532.62 × 7,769.58
  4. Step 4: Simplify right side
    10,364.82x = 120,681,933.70
  5. Step 5: Solve for x
    x = 120,681,933.70/10,364.82
  6. Step 6: Final answer
    x = 11,643.42

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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.