Home / 20,171.80-30,210.78-19,471.24

Finding the Fourth Proportional to 20,171.80, 30,210.78 and 19,471.24

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Solution

The fourth proportional to 20,171.80, 30,210.78 and 19,471.24 is: 29,161.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.80 : 30,210.78 = 19,471.24 : x
  2. Step 2: Convert to fraction form
    20,171.80/30,210.78 = 19,471.24/x
  3. Step 3: Cross multiply
    20,171.80x = 30,210.78 × 19,471.24
  4. Step 4: Simplify right side
    20,171.80x = 588,241,347.97
  5. Step 5: Solve for x
    x = 588,241,347.97/20,171.80
  6. Step 6: Final answer
    x = 29,161.57

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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.