Home / 16,721.64-25,078.43-4,872.20

Finding the Fourth Proportional to 16,721.64, 25,078.43 and 4,872.20

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Solution

The fourth proportional to 16,721.64, 25,078.43 and 4,872.20 is: 7,307.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,721.64 : 25,078.43 = 4,872.20 : x
  2. Step 2: Convert to fraction form
    16,721.64/25,078.43 = 4,872.20/x
  3. Step 3: Cross multiply
    16,721.64x = 25,078.43 × 4,872.20
  4. Step 4: Simplify right side
    16,721.64x = 122,187,126.65
  5. Step 5: Solve for x
    x = 122,187,126.65/16,721.64
  6. Step 6: Final answer
    x = 7,307.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.