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Finding the Fourth Proportional to 10,990.88, 16,492.80 and 4,070.24

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Solution

The fourth proportional to 10,990.88, 16,492.80 and 4,070.24 is: 6,107.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.88 : 16,492.80 = 4,070.24 : x
  2. Step 2: Convert to fraction form
    10,990.88/16,492.80 = 4,070.24/x
  3. Step 3: Cross multiply
    10,990.88x = 16,492.80 × 4,070.24
  4. Step 4: Simplify right side
    10,990.88x = 67,129,654.27
  5. Step 5: Solve for x
    x = 67,129,654.27/10,990.88
  6. Step 6: Final answer
    x = 6,107.76

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.