Home / 13,520.96-20,267.08-7,976.91

Finding the Fourth Proportional to 13,520.96, 20,267.08 and 7,976.91

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Solution

The fourth proportional to 13,520.96, 20,267.08 and 7,976.91 is: 11,956.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.96 : 20,267.08 = 7,976.91 : x
  2. Step 2: Convert to fraction form
    13,520.96/20,267.08 = 7,976.91/x
  3. Step 3: Cross multiply
    13,520.96x = 20,267.08 × 7,976.91
  4. Step 4: Simplify right side
    13,520.96x = 161,668,729.18
  5. Step 5: Solve for x
    x = 161,668,729.18/13,520.96
  6. Step 6: Final answer
    x = 11,956.90

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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.