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Finding the Fourth Proportional to 20,410.10, 30,607.95 and 9,322.10

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Solution

The fourth proportional to 20,410.10, 30,607.95 and 9,322.10 is: 13,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.10 : 30,607.95 = 9,322.10 : x
  2. Step 2: Convert to fraction form
    20,410.10/30,607.95 = 9,322.10/x
  3. Step 3: Cross multiply
    20,410.10x = 30,607.95 × 9,322.10
  4. Step 4: Simplify right side
    20,410.10x = 285,330,370.70
  5. Step 5: Solve for x
    x = 285,330,370.70/20,410.10
  6. Step 6: Final answer
    x = 13,979.86

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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.