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Finding the Fourth Proportional to 11,352.78, 15,668.10 and 6,636.78

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Solution

The fourth proportional to 11,352.78, 15,668.10 and 6,636.78 is: 9,159.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,352.78 : 15,668.10 = 6,636.78 : x
  2. Step 2: Convert to fraction form
    11,352.78/15,668.10 = 6,636.78/x
  3. Step 3: Cross multiply
    11,352.78x = 15,668.10 × 6,636.78
  4. Step 4: Simplify right side
    11,352.78x = 103,985,732.72
  5. Step 5: Solve for x
    x = 103,985,732.72/11,352.78
  6. Step 6: Final answer
    x = 9,159.50

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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.