Home / 39,791.60-59,687.40-12,089.60

Finding the Fourth Proportional to 39,791.60, 59,687.40 and 12,089.60

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Solution

The fourth proportional to 39,791.60, 59,687.40 and 12,089.60 is: 18,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.60 : 59,687.40 = 12,089.60 : x
  2. Step 2: Convert to fraction form
    39,791.60/59,687.40 = 12,089.60/x
  3. Step 3: Cross multiply
    39,791.60x = 59,687.40 × 12,089.60
  4. Step 4: Simplify right side
    39,791.60x = 721,596,791.04
  5. Step 5: Solve for x
    x = 721,596,791.04/39,791.60
  6. Step 6: Final answer
    x = 18,134.40

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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.