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Finding the Fourth Proportional to 32,668.80, 48,938.40 and 18,801.60

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Solution

The fourth proportional to 32,668.80, 48,938.40 and 18,801.60 is: 28,165.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,668.80 : 48,938.40 = 18,801.60 : x
  2. Step 2: Convert to fraction form
    32,668.80/48,938.40 = 18,801.60/x
  3. Step 3: Cross multiply
    32,668.80x = 48,938.40 × 18,801.60
  4. Step 4: Simplify right side
    32,668.80x = 920,120,221.44
  5. Step 5: Solve for x
    x = 920,120,221.44/32,668.80
  6. Step 6: Final answer
    x = 28,165.11

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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.