Home / 21,336.82-29,444.60-11,776.78

Finding the Fourth Proportional to 21,336.82, 29,444.60 and 11,776.78

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Solution

The fourth proportional to 21,336.82, 29,444.60 and 11,776.78 is: 16,251.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.82 : 29,444.60 = 11,776.78 : x
  2. Step 2: Convert to fraction form
    21,336.82/29,444.60 = 11,776.78/x
  3. Step 3: Cross multiply
    21,336.82x = 29,444.60 × 11,776.78
  4. Step 4: Simplify right side
    21,336.82x = 346,762,576.39
  5. Step 5: Solve for x
    x = 346,762,576.39/21,336.82
  6. Step 6: Final answer
    x = 16,251.84

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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.