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Finding the Fourth Proportional to 11,996.55, 17,959.28 and 8,890.50

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Solution

The fourth proportional to 11,996.55, 17,959.28 and 8,890.50 is: 13,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,996.55 : 17,959.28 = 8,890.50 : x
  2. Step 2: Convert to fraction form
    11,996.55/17,959.28 = 8,890.50/x
  3. Step 3: Cross multiply
    11,996.55x = 17,959.28 × 8,890.50
  4. Step 4: Simplify right side
    11,996.55x = 159,666,934.39
  5. Step 5: Solve for x
    x = 159,666,934.39/11,996.55
  6. Step 6: Final answer
    x = 13,309.40

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1.5x scale

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.