Home / 28,183.11-42,275.43-8,461.67

Finding the Fourth Proportional to 28,183.11, 42,275.43 and 8,461.67

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Solution

The fourth proportional to 28,183.11, 42,275.43 and 8,461.67 is: 12,692.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,183.11 : 42,275.43 = 8,461.67 : x
  2. Step 2: Convert to fraction form
    28,183.11/42,275.43 = 8,461.67/x
  3. Step 3: Cross multiply
    28,183.11x = 42,275.43 × 8,461.67
  4. Step 4: Simplify right side
    28,183.11x = 357,720,526.39
  5. Step 5: Solve for x
    x = 357,720,526.39/28,183.11
  6. Step 6: Final answer
    x = 12,692.73

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Similar ratio
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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.