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Finding the Fourth Proportional to 12,644.35, 17,445.43 and 8,164.01

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Solution

The fourth proportional to 12,644.35, 17,445.43 and 8,164.01 is: 11,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,644.35 : 17,445.43 = 8,164.01 : x
  2. Step 2: Convert to fraction form
    12,644.35/17,445.43 = 8,164.01/x
  3. Step 3: Cross multiply
    12,644.35x = 17,445.43 × 8,164.01
  4. Step 4: Simplify right side
    12,644.35x = 142,424,664.97
  5. Step 5: Solve for x
    x = 142,424,664.97/12,644.35
  6. Step 6: Final answer
    x = 11,263.90

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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.