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Finding the Fourth Proportional to 11,335.48, 15,644.10 and 6,620.20

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Solution

The fourth proportional to 11,335.48, 15,644.10 and 6,620.20 is: 9,136.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,335.48 : 15,644.10 = 6,620.20 : x
  2. Step 2: Convert to fraction form
    11,335.48/15,644.10 = 6,620.20/x
  3. Step 3: Cross multiply
    11,335.48x = 15,644.10 × 6,620.20
  4. Step 4: Simplify right side
    11,335.48x = 103,567,056.54
  5. Step 5: Solve for x
    x = 103,567,056.54/11,335.48
  6. Step 6: Final answer
    x = 9,136.54

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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.