Home / 21,186.69-29,236.47-12,233.66

Finding the Fourth Proportional to 21,186.69, 29,236.47 and 12,233.66

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Solution

The fourth proportional to 21,186.69, 29,236.47 and 12,233.66 is: 16,881.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.69 : 29,236.47 = 12,233.66 : x
  2. Step 2: Convert to fraction form
    21,186.69/29,236.47 = 12,233.66/x
  3. Step 3: Cross multiply
    21,186.69x = 29,236.47 × 12,233.66
  4. Step 4: Simplify right side
    21,186.69x = 357,669,033.58
  5. Step 5: Solve for x
    x = 357,669,033.58/21,186.69
  6. Step 6: Final answer
    x = 16,881.78

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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.