Home / 11,513.20-15,879.72-8,529.16

Finding the Fourth Proportional to 11,513.20, 15,879.72 and 8,529.16

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Solution

The fourth proportional to 11,513.20, 15,879.72 and 8,529.16 is: 11,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,513.20 : 15,879.72 = 8,529.16 : x
  2. Step 2: Convert to fraction form
    11,513.20/15,879.72 = 8,529.16/x
  3. Step 3: Cross multiply
    11,513.20x = 15,879.72 × 8,529.16
  4. Step 4: Simplify right side
    11,513.20x = 135,440,672.64
  5. Step 5: Solve for x
    x = 135,440,672.64/11,513.20
  6. Step 6: Final answer
    x = 11,763.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.