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Finding the Fourth Proportional to 10,388.57, 15,596.64 and 4,845.79

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Solution

The fourth proportional to 10,388.57, 15,596.64 and 4,845.79 is: 7,275.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.57 : 15,596.64 = 4,845.79 : x
  2. Step 2: Convert to fraction form
    10,388.57/15,596.64 = 4,845.79/x
  3. Step 3: Cross multiply
    10,388.57x = 15,596.64 × 4,845.79
  4. Step 4: Simplify right side
    10,388.57x = 75,578,061.64
  5. Step 5: Solve for x
    x = 75,578,061.64/10,388.57
  6. Step 6: Final answer
    x = 7,275.12

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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.