Home / 21,291.24-29,382.84-12,336.96

Finding the Fourth Proportional to 21,291.24, 29,382.84 and 12,336.96

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Solution

The fourth proportional to 21,291.24, 29,382.84 and 12,336.96 is: 17,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.24 : 29,382.84 = 12,336.96 : x
  2. Step 2: Convert to fraction form
    21,291.24/29,382.84 = 12,336.96/x
  3. Step 3: Cross multiply
    21,291.24x = 29,382.84 × 12,336.96
  4. Step 4: Simplify right side
    21,291.24x = 362,494,921.77
  5. Step 5: Solve for x
    x = 362,494,921.77/21,291.24
  6. Step 6: Final answer
    x = 17,025.54

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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.