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Finding the Fourth Proportional to 10,886.80, 16,333.80 and 3,492.40

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Solution

The fourth proportional to 10,886.80, 16,333.80 and 3,492.40 is: 5,239.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.80 : 16,333.80 = 3,492.40 : x
  2. Step 2: Convert to fraction form
    10,886.80/16,333.80 = 3,492.40/x
  3. Step 3: Cross multiply
    10,886.80x = 16,333.80 × 3,492.40
  4. Step 4: Simplify right side
    10,886.80x = 57,044,163.12
  5. Step 5: Solve for x
    x = 57,044,163.12/10,886.80
  6. Step 6: Final answer
    x = 5,239.75

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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.