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Finding the Fourth Proportional to 32,909, 45,415.52 and 18,005

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Solution

The fourth proportional to 32,909, 45,415.52 and 18,005 is: 24,847.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,909 : 45,415.52 = 18,005 : x
  2. Step 2: Convert to fraction form
    32,909/45,415.52 = 18,005/x
  3. Step 3: Cross multiply
    32,909x = 45,415.52 × 18,005
  4. Step 4: Simplify right side
    32,909x = 817,706,437.60
  5. Step 5: Solve for x
    x = 817,706,437.60/32,909
  6. Step 6: Final answer
    x = 24,847.50

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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.