Home / 15,380.20-21,226.68-8,667.13

Finding the Fourth Proportional to 15,380.20, 21,226.68 and 8,667.13

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Solution

The fourth proportional to 15,380.20, 21,226.68 and 8,667.13 is: 11,961.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.20 : 21,226.68 = 8,667.13 : x
  2. Step 2: Convert to fraction form
    15,380.20/21,226.68 = 8,667.13/x
  3. Step 3: Cross multiply
    15,380.20x = 21,226.68 × 8,667.13
  4. Step 4: Simplify right side
    15,380.20x = 183,974,395.03
  5. Step 5: Solve for x
    x = 183,974,395.03/15,380.20
  6. Step 6: Final answer
    x = 11,961.77

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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.