Home / 21,186.99-29,238.23-12,236.02

Finding the Fourth Proportional to 21,186.99, 29,238.23 and 12,236.02

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Solution

The fourth proportional to 21,186.99, 29,238.23 and 12,236.02 is: 16,885.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.99 : 29,238.23 = 12,236.02 : x
  2. Step 2: Convert to fraction form
    21,186.99/29,238.23 = 12,236.02/x
  3. Step 3: Cross multiply
    21,186.99x = 29,238.23 × 12,236.02
  4. Step 4: Simplify right side
    21,186.99x = 357,759,524.54
  5. Step 5: Solve for x
    x = 357,759,524.54/21,186.99
  6. Step 6: Final answer
    x = 16,885.81

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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.