Home / 21,033.05-28,990.41-18,474.26

Finding the Fourth Proportional to 21,033.05, 28,990.41 and 18,474.26

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Solution

The fourth proportional to 21,033.05, 28,990.41 and 18,474.26 is: 25,463.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.05 : 28,990.41 = 18,474.26 : x
  2. Step 2: Convert to fraction form
    21,033.05/28,990.41 = 18,474.26/x
  3. Step 3: Cross multiply
    21,033.05x = 28,990.41 × 18,474.26
  4. Step 4: Simplify right side
    21,033.05x = 535,576,226.89
  5. Step 5: Solve for x
    x = 535,576,226.89/21,033.05
  6. Step 6: Final answer
    x = 25,463.56

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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.