Home / 20,108.96-30,107.16-15,163.12

Finding the Fourth Proportional to 20,108.96, 30,107.16 and 15,163.12

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Solution

The fourth proportional to 20,108.96, 30,107.16 and 15,163.12 is: 22,702.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.96 : 30,107.16 = 15,163.12 : x
  2. Step 2: Convert to fraction form
    20,108.96/30,107.16 = 15,163.12/x
  3. Step 3: Cross multiply
    20,108.96x = 30,107.16 × 15,163.12
  4. Step 4: Simplify right side
    20,108.96x = 456,518,479.94
  5. Step 5: Solve for x
    x = 456,518,479.94/20,108.96
  6. Step 6: Final answer
    x = 22,702.24

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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.