Home / 20,235.13-30,371.41-10,246.90

Finding the Fourth Proportional to 20,235.13, 30,371.41 and 10,246.90

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Solution

The fourth proportional to 20,235.13, 30,371.41 and 10,246.90 is: 15,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.13 : 30,371.41 = 10,246.90 : x
  2. Step 2: Convert to fraction form
    20,235.13/30,371.41 = 10,246.90/x
  3. Step 3: Cross multiply
    20,235.13x = 30,371.41 × 10,246.90
  4. Step 4: Simplify right side
    20,235.13x = 311,212,801.13
  5. Step 5: Solve for x
    x = 311,212,801.13/20,235.13
  6. Step 6: Final answer
    x = 15,379.83

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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.