Home / 18,876.18-28,314.27-8,475.78

Finding the Fourth Proportional to 18,876.18, 28,314.27 and 8,475.78

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Solution

The fourth proportional to 18,876.18, 28,314.27 and 8,475.78 is: 12,713.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.18 : 28,314.27 = 8,475.78 : x
  2. Step 2: Convert to fraction form
    18,876.18/28,314.27 = 8,475.78/x
  3. Step 3: Cross multiply
    18,876.18x = 28,314.27 × 8,475.78
  4. Step 4: Simplify right side
    18,876.18x = 239,985,523.38
  5. Step 5: Solve for x
    x = 239,985,523.38/18,876.18
  6. Step 6: Final answer
    x = 12,713.67

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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.