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Finding the Fourth Proportional to 38,423.01, 57,643.77 and 12,127.67

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Solution

The fourth proportional to 38,423.01, 57,643.77 and 12,127.67 is: 18,194.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,423.01 : 57,643.77 = 12,127.67 : x
  2. Step 2: Convert to fraction form
    38,423.01/57,643.77 = 12,127.67/x
  3. Step 3: Cross multiply
    38,423.01x = 57,643.77 × 12,127.67
  4. Step 4: Simplify right side
    38,423.01x = 699,084,620.12
  5. Step 5: Solve for x
    x = 699,084,620.12/38,423.01
  6. Step 6: Final answer
    x = 18,194.43

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.