Home / 21,450.30-29,600.91-12,018.66

Finding the Fourth Proportional to 21,450.30, 29,600.91 and 12,018.66

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Solution

The fourth proportional to 21,450.30, 29,600.91 and 12,018.66 is: 16,585.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.30 : 29,600.91 = 12,018.66 : x
  2. Step 2: Convert to fraction form
    21,450.30/29,600.91 = 12,018.66/x
  3. Step 3: Cross multiply
    21,450.30x = 29,600.91 × 12,018.66
  4. Step 4: Simplify right side
    21,450.30x = 355,763,272.98
  5. Step 5: Solve for x
    x = 355,763,272.98/21,450.30
  6. Step 6: Final answer
    x = 16,585.47

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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.