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Finding the Fourth Proportional to 38,647.68, 57,975.17 and 12,346.17

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Solution

The fourth proportional to 38,647.68, 57,975.17 and 12,346.17 is: 18,520.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,647.68 : 57,975.17 = 12,346.17 : x
  2. Step 2: Convert to fraction form
    38,647.68/57,975.17 = 12,346.17/x
  3. Step 3: Cross multiply
    38,647.68x = 57,975.17 × 12,346.17
  4. Step 4: Simplify right side
    38,647.68x = 715,771,242.87
  5. Step 5: Solve for x
    x = 715,771,242.87/38,647.68
  6. Step 6: Final answer
    x = 18,520.42

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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.