Home / 12,011.91-18,002.19-8,691.34

Finding the Fourth Proportional to 12,011.91, 18,002.19 and 8,691.34

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Solution

The fourth proportional to 12,011.91, 18,002.19 and 8,691.34 is: 13,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,011.91 : 18,002.19 = 8,691.34 : x
  2. Step 2: Convert to fraction form
    12,011.91/18,002.19 = 8,691.34/x
  3. Step 3: Cross multiply
    12,011.91x = 18,002.19 × 8,691.34
  4. Step 4: Simplify right side
    12,011.91x = 156,463,143.94
  5. Step 5: Solve for x
    x = 156,463,143.94/12,011.91
  6. Step 6: Final answer
    x = 13,025.67

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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.