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Finding the Fourth Proportional to 32,005.80, 47,943.90 and 18,138.60

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Solution

The fourth proportional to 32,005.80, 47,943.90 and 18,138.60 is: 27,171.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,005.80 : 47,943.90 = 18,138.60 : x
  2. Step 2: Convert to fraction form
    32,005.80/47,943.90 = 18,138.60/x
  3. Step 3: Cross multiply
    32,005.80x = 47,943.90 × 18,138.60
  4. Step 4: Simplify right side
    32,005.80x = 869,635,224.54
  5. Step 5: Solve for x
    x = 869,635,224.54/32,005.80
  6. Step 6: Final answer
    x = 27,171.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.