Home / 20,287.20-30,433.64-9,196.68

Finding the Fourth Proportional to 20,287.20, 30,433.64 and 9,196.68

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Solution

The fourth proportional to 20,287.20, 30,433.64 and 9,196.68 is: 13,796.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.20 : 30,433.64 = 9,196.68 : x
  2. Step 2: Convert to fraction form
    20,287.20/30,433.64 = 9,196.68/x
  3. Step 3: Cross multiply
    20,287.20x = 30,433.64 × 9,196.68
  4. Step 4: Simplify right side
    20,287.20x = 279,888,448.32
  5. Step 5: Solve for x
    x = 279,888,448.32/20,287.20
  6. Step 6: Final answer
    x = 13,796.31

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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.