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Finding the Fourth Proportional to 16,913.18, 25,351.86 and 6,378.64

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Solution

The fourth proportional to 16,913.18, 25,351.86 and 6,378.64 is: 9,561.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,913.18 : 25,351.86 = 6,378.64 : x
  2. Step 2: Convert to fraction form
    16,913.18/25,351.86 = 6,378.64/x
  3. Step 3: Cross multiply
    16,913.18x = 25,351.86 × 6,378.64
  4. Step 4: Simplify right side
    16,913.18x = 161,710,388.27
  5. Step 5: Solve for x
    x = 161,710,388.27/16,913.18
  6. Step 6: Final answer
    x = 9,561.21

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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.