Home / 11,013.12-16,520.63-3,115.67

Finding the Fourth Proportional to 11,013.12, 16,520.63 and 3,115.67

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Solution

The fourth proportional to 11,013.12, 16,520.63 and 3,115.67 is: 4,673.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,013.12 : 16,520.63 = 3,115.67 : x
  2. Step 2: Convert to fraction form
    11,013.12/16,520.63 = 3,115.67/x
  3. Step 3: Cross multiply
    11,013.12x = 16,520.63 × 3,115.67
  4. Step 4: Simplify right side
    11,013.12x = 51,472,733.09
  5. Step 5: Solve for x
    x = 51,472,733.09/11,013.12
  6. Step 6: Final answer
    x = 4,673.76

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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.