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Finding the Fourth Proportional to 39,309.57, 58,958.08 and 10,839.89

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Solution

The fourth proportional to 39,309.57, 58,958.08 and 10,839.89 is: 16,258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.57 : 58,958.08 = 10,839.89 : x
  2. Step 2: Convert to fraction form
    39,309.57/58,958.08 = 10,839.89/x
  3. Step 3: Cross multiply
    39,309.57x = 58,958.08 × 10,839.89
  4. Step 4: Simplify right side
    39,309.57x = 639,099,222.11
  5. Step 5: Solve for x
    x = 639,099,222.11/39,309.57
  6. Step 6: Final answer
    x = 16,258.11

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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.