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Finding the Fourth Proportional to 9,511.14, 13,128.98 and 8,514.63

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Solution

The fourth proportional to 9,511.14, 13,128.98 and 8,514.63 is: 11,753.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,511.14 : 13,128.98 = 8,514.63 : x
  2. Step 2: Convert to fraction form
    9,511.14/13,128.98 = 8,514.63/x
  3. Step 3: Cross multiply
    9,511.14x = 13,128.98 × 8,514.63
  4. Step 4: Simplify right side
    9,511.14x = 111,788,364.40
  5. Step 5: Solve for x
    x = 111,788,364.40/9,511.14
  6. Step 6: Final answer
    x = 11,753.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.