Home / 21,230.16-29,297.92-12,846.72

Finding the Fourth Proportional to 21,230.16, 29,297.92 and 12,846.72

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Solution

The fourth proportional to 21,230.16, 29,297.92 and 12,846.72 is: 17,728.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.16 : 29,297.92 = 12,846.72 : x
  2. Step 2: Convert to fraction form
    21,230.16/29,297.92 = 12,846.72/x
  3. Step 3: Cross multiply
    21,230.16x = 29,297.92 × 12,846.72
  4. Step 4: Simplify right side
    21,230.16x = 376,382,174.82
  5. Step 5: Solve for x
    x = 376,382,174.82/21,230.16
  6. Step 6: Final answer
    x = 17,728.65

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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.