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Finding the Fourth Proportional to 11,354.54, 15,664.21 and 6,636.74

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Solution

The fourth proportional to 11,354.54, 15,664.21 and 6,636.74 is: 9,155.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,354.54 : 15,664.21 = 6,636.74 : x
  2. Step 2: Convert to fraction form
    11,354.54/15,664.21 = 6,636.74/x
  3. Step 3: Cross multiply
    11,354.54x = 15,664.21 × 6,636.74
  4. Step 4: Simplify right side
    11,354.54x = 103,959,194.16
  5. Step 5: Solve for x
    x = 103,959,194.16/11,354.54
  6. Step 6: Final answer
    x = 9,155.74

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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.