Home / 28,544.66-39,429.28-21,912.24

Finding the Fourth Proportional to 28,544.66, 39,429.28 and 21,912.24

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Solution

The fourth proportional to 28,544.66, 39,429.28 and 21,912.24 is: 30,267.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544.66 : 39,429.28 = 21,912.24 : x
  2. Step 2: Convert to fraction form
    28,544.66/39,429.28 = 21,912.24/x
  3. Step 3: Cross multiply
    28,544.66x = 39,429.28 × 21,912.24
  4. Step 4: Simplify right side
    28,544.66x = 863,983,846.39
  5. Step 5: Solve for x
    x = 863,983,846.39/28,544.66
  6. Step 6: Final answer
    x = 30,267.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.