Home / 21,243.35-29,320.06-16,198.55

Finding the Fourth Proportional to 21,243.35, 29,320.06 and 16,198.55

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Solution

The fourth proportional to 21,243.35, 29,320.06 and 16,198.55 is: 22,357.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.35 : 29,320.06 = 16,198.55 : x
  2. Step 2: Convert to fraction form
    21,243.35/29,320.06 = 16,198.55/x
  3. Step 3: Cross multiply
    21,243.35x = 29,320.06 × 16,198.55
  4. Step 4: Simplify right side
    21,243.35x = 474,942,411.14
  5. Step 5: Solve for x
    x = 474,942,411.14/21,243.35
  6. Step 6: Final answer
    x = 22,357.23

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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.