Home / 20,257.53-30,399.89-7,109.94

Finding the Fourth Proportional to 20,257.53, 30,399.89 and 7,109.94

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Solution

The fourth proportional to 20,257.53, 30,399.89 and 7,109.94 is: 10,669.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.53 : 30,399.89 = 7,109.94 : x
  2. Step 2: Convert to fraction form
    20,257.53/30,399.89 = 7,109.94/x
  3. Step 3: Cross multiply
    20,257.53x = 30,399.89 × 7,109.94
  4. Step 4: Simplify right side
    20,257.53x = 216,141,358.36
  5. Step 5: Solve for x
    x = 216,141,358.36/20,257.53
  6. Step 6: Final answer
    x = 10,669.68

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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.