Home / 20,439.44-30,659.18-7,111.52

Finding the Fourth Proportional to 20,439.44, 30,659.18 and 7,111.52

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Solution

The fourth proportional to 20,439.44, 30,659.18 and 7,111.52 is: 10,667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.44 : 30,659.18 = 7,111.52 : x
  2. Step 2: Convert to fraction form
    20,439.44/30,659.18 = 7,111.52/x
  3. Step 3: Cross multiply
    20,439.44x = 30,659.18 × 7,111.52
  4. Step 4: Simplify right side
    20,439.44x = 218,033,182.90
  5. Step 5: Solve for x
    x = 218,033,182.90/20,439.44
  6. Step 6: Final answer
    x = 10,667.28

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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.