Home / 21,214.21-29,274.80-11,783.38

Finding the Fourth Proportional to 21,214.21, 29,274.80 and 11,783.38

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Solution

The fourth proportional to 21,214.21, 29,274.80 and 11,783.38 is: 16,260.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.21 : 29,274.80 = 11,783.38 : x
  2. Step 2: Convert to fraction form
    21,214.21/29,274.80 = 11,783.38/x
  3. Step 3: Cross multiply
    21,214.21x = 29,274.80 × 11,783.38
  4. Step 4: Simplify right side
    21,214.21x = 344,956,092.82
  5. Step 5: Solve for x
    x = 344,956,092.82/21,214.21
  6. Step 6: Final answer
    x = 16,260.61

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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.