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Finding the Fourth Proportional to 39,171.80, 58,736.10 and 15,771.80

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Solution

The fourth proportional to 39,171.80, 58,736.10 and 15,771.80 is: 23,649.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,171.80 : 58,736.10 = 15,771.80 : x
  2. Step 2: Convert to fraction form
    39,171.80/58,736.10 = 15,771.80/x
  3. Step 3: Cross multiply
    39,171.80x = 58,736.10 × 15,771.80
  4. Step 4: Simplify right side
    39,171.80x = 926,374,021.98
  5. Step 5: Solve for x
    x = 926,374,021.98/39,171.80
  6. Step 6: Final answer
    x = 23,649.00

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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.