Home / 20,163.90-30,213.45-16,859.10

Finding the Fourth Proportional to 20,163.90, 30,213.45 and 16,859.10

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Solution

The fourth proportional to 20,163.90, 30,213.45 and 16,859.10 is: 25,261.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.90 : 30,213.45 = 16,859.10 : x
  2. Step 2: Convert to fraction form
    20,163.90/30,213.45 = 16,859.10/x
  3. Step 3: Cross multiply
    20,163.90x = 30,213.45 × 16,859.10
  4. Step 4: Simplify right side
    20,163.90x = 509,371,574.90
  5. Step 5: Solve for x
    x = 509,371,574.90/20,163.90
  6. Step 6: Final answer
    x = 25,261.56

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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.