Home / 20,306.12-30,411.86-19,745.60

Finding the Fourth Proportional to 20,306.12, 30,411.86 and 19,745.60

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Solution

The fourth proportional to 20,306.12, 30,411.86 and 19,745.60 is: 29,572.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.12 : 30,411.86 = 19,745.60 : x
  2. Step 2: Convert to fraction form
    20,306.12/30,411.86 = 19,745.60/x
  3. Step 3: Cross multiply
    20,306.12x = 30,411.86 × 19,745.60
  4. Step 4: Simplify right side
    20,306.12x = 600,500,422.82
  5. Step 5: Solve for x
    x = 600,500,422.82/20,306.12
  6. Step 6: Final answer
    x = 29,572.39

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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.