Home / 20,633.32-30,929.47-12,300.85

Finding the Fourth Proportional to 20,633.32, 30,929.47 and 12,300.85

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Solution

The fourth proportional to 20,633.32, 30,929.47 and 12,300.85 is: 18,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.32 : 30,929.47 = 12,300.85 : x
  2. Step 2: Convert to fraction form
    20,633.32/30,929.47 = 12,300.85/x
  3. Step 3: Cross multiply
    20,633.32x = 30,929.47 × 12,300.85
  4. Step 4: Simplify right side
    20,633.32x = 380,458,724.48
  5. Step 5: Solve for x
    x = 380,458,724.48/20,633.32
  6. Step 6: Final answer
    x = 18,439.05

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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.