Home / 20,145.48-30,221.42-7,001.80

Finding the Fourth Proportional to 20,145.48, 30,221.42 and 7,001.80

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Solution

The fourth proportional to 20,145.48, 30,221.42 and 7,001.80 is: 10,503.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.48 : 30,221.42 = 7,001.80 : x
  2. Step 2: Convert to fraction form
    20,145.48/30,221.42 = 7,001.80/x
  3. Step 3: Cross multiply
    20,145.48x = 30,221.42 × 7,001.80
  4. Step 4: Simplify right side
    20,145.48x = 211,604,338.56
  5. Step 5: Solve for x
    x = 211,604,338.56/20,145.48
  6. Step 6: Final answer
    x = 10,503.81

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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.