Home / 21,450.12-29,601.24-12,018.76

Finding the Fourth Proportional to 21,450.12, 29,601.24 and 12,018.76

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Solution

The fourth proportional to 21,450.12, 29,601.24 and 12,018.76 is: 16,585.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.12 : 29,601.24 = 12,018.76 : x
  2. Step 2: Convert to fraction form
    21,450.12/29,601.24 = 12,018.76/x
  3. Step 3: Cross multiply
    21,450.12x = 29,601.24 × 12,018.76
  4. Step 4: Simplify right side
    21,450.12x = 355,770,199.26
  5. Step 5: Solve for x
    x = 355,770,199.26/21,450.12
  6. Step 6: Final answer
    x = 16,585.93

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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.