Home / 20,520.32-30,767.51-8,667.93

Finding the Fourth Proportional to 20,520.32, 30,767.51 and 8,667.93

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Solution

The fourth proportional to 20,520.32, 30,767.51 and 8,667.93 is: 12,996.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.32 : 30,767.51 = 8,667.93 : x
  2. Step 2: Convert to fraction form
    20,520.32/30,767.51 = 8,667.93/x
  3. Step 3: Cross multiply
    20,520.32x = 30,767.51 × 8,667.93
  4. Step 4: Simplify right side
    20,520.32x = 266,690,579.61
  5. Step 5: Solve for x
    x = 266,690,579.61/20,520.32
  6. Step 6: Final answer
    x = 12,996.42

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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.