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Finding the Fourth Proportional to 20,662.16, 30,974.13 and 7,511.00

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Solution

The fourth proportional to 20,662.16, 30,974.13 and 7,511.00 is: 11,259.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.16 : 30,974.13 = 7,511.00 : x
  2. Step 2: Convert to fraction form
    20,662.16/30,974.13 = 7,511.00/x
  3. Step 3: Cross multiply
    20,662.16x = 30,974.13 × 7,511.00
  4. Step 4: Simplify right side
    20,662.16x = 232,646,535.56
  5. Step 5: Solve for x
    x = 232,646,535.56/20,662.16
  6. Step 6: Final answer
    x = 11,259.55

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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.