Home / 20,105.20-30,156.85-9,567.51

Finding the Fourth Proportional to 20,105.20, 30,156.85 and 9,567.51

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Solution

The fourth proportional to 20,105.20, 30,156.85 and 9,567.51 is: 14,350.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.20 : 30,156.85 = 9,567.51 : x
  2. Step 2: Convert to fraction form
    20,105.20/30,156.85 = 9,567.51/x
  3. Step 3: Cross multiply
    20,105.20x = 30,156.85 × 9,567.51
  4. Step 4: Simplify right side
    20,105.20x = 288,525,963.94
  5. Step 5: Solve for x
    x = 288,525,963.94/20,105.20
  6. Step 6: Final answer
    x = 14,350.81

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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.