Home / 20,303.92-30,435.09-11,520.28

Finding the Fourth Proportional to 20,303.92, 30,435.09 and 11,520.28

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Solution

The fourth proportional to 20,303.92, 30,435.09 and 11,520.28 is: 17,268.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.92 : 30,435.09 = 11,520.28 : x
  2. Step 2: Convert to fraction form
    20,303.92/30,435.09 = 11,520.28/x
  3. Step 3: Cross multiply
    20,303.92x = 30,435.09 × 11,520.28
  4. Step 4: Simplify right side
    20,303.92x = 350,620,758.63
  5. Step 5: Solve for x
    x = 350,620,758.63/20,303.92
  6. Step 6: Final answer
    x = 17,268.62

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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.