Home / 20,208.56-30,288.24-9,112.32

Finding the Fourth Proportional to 20,208.56, 30,288.24 and 9,112.32

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Solution

The fourth proportional to 20,208.56, 30,288.24 and 9,112.32 is: 13,657.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.56 : 30,288.24 = 9,112.32 : x
  2. Step 2: Convert to fraction form
    20,208.56/30,288.24 = 9,112.32/x
  3. Step 3: Cross multiply
    20,208.56x = 30,288.24 × 9,112.32
  4. Step 4: Simplify right side
    20,208.56x = 275,996,135.12
  5. Step 5: Solve for x
    x = 275,996,135.12/20,208.56
  6. Step 6: Final answer
    x = 13,657.39

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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.