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Finding the Fourth Proportional to 11,269.80, 16,890.30 and 10,031.40

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Solution

The fourth proportional to 11,269.80, 16,890.30 and 10,031.40 is: 15,034.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,269.80 : 16,890.30 = 10,031.40 : x
  2. Step 2: Convert to fraction form
    11,269.80/16,890.30 = 10,031.40/x
  3. Step 3: Cross multiply
    11,269.80x = 16,890.30 × 10,031.40
  4. Step 4: Simplify right side
    11,269.80x = 169,433,355.42
  5. Step 5: Solve for x
    x = 169,433,355.42/11,269.80
  6. Step 6: Final answer
    x = 15,034.28

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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.