Home / 21,423.97-29,574.35-16,120.09

Finding the Fourth Proportional to 21,423.97, 29,574.35 and 16,120.09

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Solution

The fourth proportional to 21,423.97, 29,574.35 and 16,120.09 is: 22,252.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.97 : 29,574.35 = 16,120.09 : x
  2. Step 2: Convert to fraction form
    21,423.97/29,574.35 = 16,120.09/x
  3. Step 3: Cross multiply
    21,423.97x = 29,574.35 × 16,120.09
  4. Step 4: Simplify right side
    21,423.97x = 476,741,183.69
  5. Step 5: Solve for x
    x = 476,741,183.69/21,423.97
  6. Step 6: Final answer
    x = 22,252.70

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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.