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Finding the Fourth Proportional to 10,909.60, 16,359.60 and 4,333.60

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Solution

The fourth proportional to 10,909.60, 16,359.60 and 4,333.60 is: 6,498.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,909.60 : 16,359.60 = 4,333.60 : x
  2. Step 2: Convert to fraction form
    10,909.60/16,359.60 = 4,333.60/x
  3. Step 3: Cross multiply
    10,909.60x = 16,359.60 × 4,333.60
  4. Step 4: Simplify right side
    10,909.60x = 70,895,962.56
  5. Step 5: Solve for x
    x = 70,895,962.56/10,909.60
  6. Step 6: Final answer
    x = 6,498.49

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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.