Home / 20,923.78-31,259.23-13,467.46

Finding the Fourth Proportional to 20,923.78, 31,259.23 and 13,467.46

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Solution

The fourth proportional to 20,923.78, 31,259.23 and 13,467.46 is: 20,119.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.78 : 31,259.23 = 13,467.46 : x
  2. Step 2: Convert to fraction form
    20,923.78/31,259.23 = 13,467.46/x
  3. Step 3: Cross multiply
    20,923.78x = 31,259.23 × 13,467.46
  4. Step 4: Simplify right side
    20,923.78x = 420,982,429.66
  5. Step 5: Solve for x
    x = 420,982,429.66/20,923.78
  6. Step 6: Final answer
    x = 20,119.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.