Home / 20,399.39-30,429.56-20,061.06

Finding the Fourth Proportional to 20,399.39, 30,429.56 and 20,061.06

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Solution

The fourth proportional to 20,399.39, 30,429.56 and 20,061.06 is: 29,924.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,399.39 : 30,429.56 = 20,061.06 : x
  2. Step 2: Convert to fraction form
    20,399.39/30,429.56 = 20,061.06/x
  3. Step 3: Cross multiply
    20,399.39x = 30,429.56 × 20,061.06
  4. Step 4: Simplify right side
    20,399.39x = 610,449,228.93
  5. Step 5: Solve for x
    x = 610,449,228.93/20,399.39
  6. Step 6: Final answer
    x = 29,924.88

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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.