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Finding the Fourth Proportional to 20,566.99, 30,809.22 and 9,458.20

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Solution

The fourth proportional to 20,566.99, 30,809.22 and 9,458.20 is: 14,168.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.99 : 30,809.22 = 9,458.20 : x
  2. Step 2: Convert to fraction form
    20,566.99/30,809.22 = 9,458.20/x
  3. Step 3: Cross multiply
    20,566.99x = 30,809.22 × 9,458.20
  4. Step 4: Simplify right side
    20,566.99x = 291,399,764.60
  5. Step 5: Solve for x
    x = 291,399,764.60/20,566.99
  6. Step 6: Final answer
    x = 14,168.32

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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.