Home / 20,188.36-30,244.38-11,429.56

Finding the Fourth Proportional to 20,188.36, 30,244.38 and 11,429.56

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Solution

The fourth proportional to 20,188.36, 30,244.38 and 11,429.56 is: 17,122.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.36 : 30,244.38 = 11,429.56 : x
  2. Step 2: Convert to fraction form
    20,188.36/30,244.38 = 11,429.56/x
  3. Step 3: Cross multiply
    20,188.36x = 30,244.38 × 11,429.56
  4. Step 4: Simplify right side
    20,188.36x = 345,679,955.87
  5. Step 5: Solve for x
    x = 345,679,955.87/20,188.36
  6. Step 6: Final answer
    x = 17,122.74

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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.