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Finding the Fourth Proportional to 10,303.29, 15,440.81 and 6,787.99

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Solution

The fourth proportional to 10,303.29, 15,440.81 and 6,787.99 is: 10,172.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,303.29 : 15,440.81 = 6,787.99 : x
  2. Step 2: Convert to fraction form
    10,303.29/15,440.81 = 6,787.99/x
  3. Step 3: Cross multiply
    10,303.29x = 15,440.81 × 6,787.99
  4. Step 4: Simplify right side
    10,303.29x = 104,812,063.87
  5. Step 5: Solve for x
    x = 104,812,063.87/10,303.29
  6. Step 6: Final answer
    x = 10,172.68

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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.