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Finding the Fourth Proportional to 39,469.59, 59,203.55 and 12,815.55

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Solution

The fourth proportional to 39,469.59, 59,203.55 and 12,815.55 is: 19,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,469.59 : 59,203.55 = 12,815.55 : x
  2. Step 2: Convert to fraction form
    39,469.59/59,203.55 = 12,815.55/x
  3. Step 3: Cross multiply
    39,469.59x = 59,203.55 × 12,815.55
  4. Step 4: Simplify right side
    39,469.59x = 758,726,087.24
  5. Step 5: Solve for x
    x = 758,726,087.24/39,469.59
  6. Step 6: Final answer
    x = 19,223.05

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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.