Home / 21,451.46-29,601.39-12,018.20

Finding the Fourth Proportional to 21,451.46, 29,601.39 and 12,018.20

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Solution

The fourth proportional to 21,451.46, 29,601.39 and 12,018.20 is: 16,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.46 : 29,601.39 = 12,018.20 : x
  2. Step 2: Convert to fraction form
    21,451.46/29,601.39 = 12,018.20/x
  3. Step 3: Cross multiply
    21,451.46x = 29,601.39 × 12,018.20
  4. Step 4: Simplify right side
    21,451.46x = 355,755,277.29
  5. Step 5: Solve for x
    x = 355,755,277.29/21,451.46
  6. Step 6: Final answer
    x = 16,584.20

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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.