Home / 20,212.70-30,304.65-7,727.90

Finding the Fourth Proportional to 20,212.70, 30,304.65 and 7,727.90

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Solution

The fourth proportional to 20,212.70, 30,304.65 and 7,727.90 is: 11,586.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.70 : 30,304.65 = 7,727.90 : x
  2. Step 2: Convert to fraction form
    20,212.70/30,304.65 = 7,727.90/x
  3. Step 3: Cross multiply
    20,212.70x = 30,304.65 × 7,727.90
  4. Step 4: Simplify right side
    20,212.70x = 234,191,304.74
  5. Step 5: Solve for x
    x = 234,191,304.74/20,212.70
  6. Step 6: Final answer
    x = 11,586.34

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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.