Home / 20,330.17-30,474.79-9,784.78

Finding the Fourth Proportional to 20,330.17, 30,474.79 and 9,784.78

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Solution

The fourth proportional to 20,330.17, 30,474.79 and 9,784.78 is: 14,667.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.17 : 30,474.79 = 9,784.78 : x
  2. Step 2: Convert to fraction form
    20,330.17/30,474.79 = 9,784.78/x
  3. Step 3: Cross multiply
    20,330.17x = 30,474.79 × 9,784.78
  4. Step 4: Simplify right side
    20,330.17x = 298,189,115.70
  5. Step 5: Solve for x
    x = 298,189,115.70/20,330.17
  6. Step 6: Final answer
    x = 14,667.32

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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.