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Finding the Fourth Proportional to 10,951.40, 16,416.16 and 3,929.52

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Solution

The fourth proportional to 10,951.40, 16,416.16 and 3,929.52 is: 5,890.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,951.40 : 16,416.16 = 3,929.52 : x
  2. Step 2: Convert to fraction form
    10,951.40/16,416.16 = 3,929.52/x
  3. Step 3: Cross multiply
    10,951.40x = 16,416.16 × 3,929.52
  4. Step 4: Simplify right side
    10,951.40x = 64,507,629.04
  5. Step 5: Solve for x
    x = 64,507,629.04/10,951.40
  6. Step 6: Final answer
    x = 5,890.35

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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.