Home / 20,520.19-30,784.47-7,194.61

Finding the Fourth Proportional to 20,520.19, 30,784.47 and 7,194.61

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Solution

The fourth proportional to 20,520.19, 30,784.47 and 7,194.61 is: 10,793.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.19 : 30,784.47 = 7,194.61 : x
  2. Step 2: Convert to fraction form
    20,520.19/30,784.47 = 7,194.61/x
  3. Step 3: Cross multiply
    20,520.19x = 30,784.47 × 7,194.61
  4. Step 4: Simplify right side
    20,520.19x = 221,482,255.71
  5. Step 5: Solve for x
    x = 221,482,255.71/20,520.19
  6. Step 6: Final answer
    x = 10,793.38

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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.