Home / 12,520.92-17,279.70-7,216.08

Finding the Fourth Proportional to 12,520.92, 17,279.70 and 7,216.08

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Solution

The fourth proportional to 12,520.92, 17,279.70 and 7,216.08 is: 9,958.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.92 : 17,279.70 = 7,216.08 : x
  2. Step 2: Convert to fraction form
    12,520.92/17,279.70 = 7,216.08/x
  3. Step 3: Cross multiply
    12,520.92x = 17,279.70 × 7,216.08
  4. Step 4: Simplify right side
    12,520.92x = 124,691,715.20
  5. Step 5: Solve for x
    x = 124,691,715.20/12,520.92
  6. Step 6: Final answer
    x = 9,958.67

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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.