Home / 20,620.40-28,449.44-11,667.04

Finding the Fourth Proportional to 20,620.40, 28,449.44 and 11,667.04

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Solution

The fourth proportional to 20,620.40, 28,449.44 and 11,667.04 is: 16,096.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.40 : 28,449.44 = 11,667.04 : x
  2. Step 2: Convert to fraction form
    20,620.40/28,449.44 = 11,667.04/x
  3. Step 3: Cross multiply
    20,620.40x = 28,449.44 × 11,667.04
  4. Step 4: Simplify right side
    20,620.40x = 331,920,754.46
  5. Step 5: Solve for x
    x = 331,920,754.46/20,620.40
  6. Step 6: Final answer
    x = 16,096.72

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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.