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Finding the Fourth Proportional to 20,665.43, 30,998.96 and 10,798.01

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Solution

The fourth proportional to 20,665.43, 30,998.96 and 10,798.01 is: 16,197.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665.43 : 30,998.96 = 10,798.01 : x
  2. Step 2: Convert to fraction form
    20,665.43/30,998.96 = 10,798.01/x
  3. Step 3: Cross multiply
    20,665.43x = 30,998.96 × 10,798.01
  4. Step 4: Simplify right side
    20,665.43x = 334,727,026.08
  5. Step 5: Solve for x
    x = 334,727,026.08/20,665.43
  6. Step 6: Final answer
    x = 16,197.44

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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.