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Finding the Fourth Proportional to 10,808.99, 16,187.36 and 8,946.39

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Solution

The fourth proportional to 10,808.99, 16,187.36 and 8,946.39 is: 13,397.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.99 : 16,187.36 = 8,946.39 : x
  2. Step 2: Convert to fraction form
    10,808.99/16,187.36 = 8,946.39/x
  3. Step 3: Cross multiply
    10,808.99x = 16,187.36 × 8,946.39
  4. Step 4: Simplify right side
    10,808.99x = 144,818,390.90
  5. Step 5: Solve for x
    x = 144,818,390.90/10,808.99
  6. Step 6: Final answer
    x = 13,397.96

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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.