Home / 12,721.16-19,083.72-3,954.32

Finding the Fourth Proportional to 12,721.16, 19,083.72 and 3,954.32

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Solution

The fourth proportional to 12,721.16, 19,083.72 and 3,954.32 is: 5,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.16 : 19,083.72 = 3,954.32 : x
  2. Step 2: Convert to fraction form
    12,721.16/19,083.72 = 3,954.32/x
  3. Step 3: Cross multiply
    12,721.16x = 19,083.72 × 3,954.32
  4. Step 4: Simplify right side
    12,721.16x = 75,463,135.67
  5. Step 5: Solve for x
    x = 75,463,135.67/12,721.16
  6. Step 6: Final answer
    x = 5,932.10

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1.5x scale

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.