Home / 20,356.20-30,539.70-7,207.20

Finding the Fourth Proportional to 20,356.20, 30,539.70 and 7,207.20

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Solution

The fourth proportional to 20,356.20, 30,539.70 and 7,207.20 is: 10,812.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.20 : 30,539.70 = 7,207.20 : x
  2. Step 2: Convert to fraction form
    20,356.20/30,539.70 = 7,207.20/x
  3. Step 3: Cross multiply
    20,356.20x = 30,539.70 × 7,207.20
  4. Step 4: Simplify right side
    20,356.20x = 220,105,725.84
  5. Step 5: Solve for x
    x = 220,105,725.84/20,356.20
  6. Step 6: Final answer
    x = 10,812.71

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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.