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Finding the Fourth Proportional to 39,804.60, 59,634.90 and 18,982.20

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Solution

The fourth proportional to 39,804.60, 59,634.90 and 18,982.20 is: 28,438.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,804.60 : 59,634.90 = 18,982.20 : x
  2. Step 2: Convert to fraction form
    39,804.60/59,634.90 = 18,982.20/x
  3. Step 3: Cross multiply
    39,804.60x = 59,634.90 × 18,982.20
  4. Step 4: Simplify right side
    39,804.60x = 1,132,001,598.78
  5. Step 5: Solve for x
    x = 1,132,001,598.78/39,804.60
  6. Step 6: Final answer
    x = 28,438.96

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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.