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Finding the Fourth Proportional to 10,671.84, 16,002.72 and 6,289.92

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Solution

The fourth proportional to 10,671.84, 16,002.72 and 6,289.92 is: 9,431.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,671.84 : 16,002.72 = 6,289.92 : x
  2. Step 2: Convert to fraction form
    10,671.84/16,002.72 = 6,289.92/x
  3. Step 3: Cross multiply
    10,671.84x = 16,002.72 × 6,289.92
  4. Step 4: Simplify right side
    10,671.84x = 100,655,828.58
  5. Step 5: Solve for x
    x = 100,655,828.58/10,671.84
  6. Step 6: Final answer
    x = 9,431.91

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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.