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Finding the Fourth Proportional to 11,851.90, 16,353.48 and 6,815.04

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Solution

The fourth proportional to 11,851.90, 16,353.48 and 6,815.04 is: 9,403.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,851.90 : 16,353.48 = 6,815.04 : x
  2. Step 2: Convert to fraction form
    11,851.90/16,353.48 = 6,815.04/x
  3. Step 3: Cross multiply
    11,851.90x = 16,353.48 × 6,815.04
  4. Step 4: Simplify right side
    11,851.90x = 111,449,620.34
  5. Step 5: Solve for x
    x = 111,449,620.34/11,851.90
  6. Step 6: Final answer
    x = 9,403.52

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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.