Home / 20,222.18-30,261.50-12,322.32

Finding the Fourth Proportional to 20,222.18, 30,261.50 and 12,322.32

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Solution

The fourth proportional to 20,222.18, 30,261.50 and 12,322.32 is: 18,439.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,222.18 : 30,261.50 = 12,322.32 : x
  2. Step 2: Convert to fraction form
    20,222.18/30,261.50 = 12,322.32/x
  3. Step 3: Cross multiply
    20,222.18x = 30,261.50 × 12,322.32
  4. Step 4: Simplify right side
    20,222.18x = 372,891,886.68
  5. Step 5: Solve for x
    x = 372,891,886.68/20,222.18
  6. Step 6: Final answer
    x = 18,439.75

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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.