Home / 20,222.25-30,299.84-12,300.80

Finding the Fourth Proportional to 20,222.25, 30,299.84 and 12,300.80

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Solution

The fourth proportional to 20,222.25, 30,299.84 and 12,300.80 is: 18,430.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,222.25 : 30,299.84 = 12,300.80 : x
  2. Step 2: Convert to fraction form
    20,222.25/30,299.84 = 12,300.80/x
  3. Step 3: Cross multiply
    20,222.25x = 30,299.84 × 12,300.80
  4. Step 4: Simplify right side
    20,222.25x = 372,712,058.87
  5. Step 5: Solve for x
    x = 372,712,058.87/20,222.25
  6. Step 6: Final answer
    x = 18,430.79

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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.