Home / 21,210.26-29,268.82-12,256.32

Finding the Fourth Proportional to 21,210.26, 29,268.82 and 12,256.32

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Solution

The fourth proportional to 21,210.26, 29,268.82 and 12,256.32 is: 16,912.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.26 : 29,268.82 = 12,256.32 : x
  2. Step 2: Convert to fraction form
    21,210.26/29,268.82 = 12,256.32/x
  3. Step 3: Cross multiply
    21,210.26x = 29,268.82 × 12,256.32
  4. Step 4: Simplify right side
    21,210.26x = 358,728,023.94
  5. Step 5: Solve for x
    x = 358,728,023.94/21,210.26
  6. Step 6: Final answer
    x = 16,912.95

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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.