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Finding the Fourth Proportional to 38,459.76, 57,692.88 and 12,163.92

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Solution

The fourth proportional to 38,459.76, 57,692.88 and 12,163.92 is: 18,246.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,459.76 : 57,692.88 = 12,163.92 : x
  2. Step 2: Convert to fraction form
    38,459.76/57,692.88 = 12,163.92/x
  3. Step 3: Cross multiply
    38,459.76x = 57,692.88 × 12,163.92
  4. Step 4: Simplify right side
    38,459.76x = 701,771,576.89
  5. Step 5: Solve for x
    x = 701,771,576.89/38,459.76
  6. Step 6: Final answer
    x = 18,246.90

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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.