Home / 21,336.41-29,437.22-13,787.19

Finding the Fourth Proportional to 21,336.41, 29,437.22 and 13,787.19

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Solution

The fourth proportional to 21,336.41, 29,437.22 and 13,787.19 is: 19,021.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.41 : 29,437.22 = 13,787.19 : x
  2. Step 2: Convert to fraction form
    21,336.41/29,437.22 = 13,787.19/x
  3. Step 3: Cross multiply
    21,336.41x = 29,437.22 × 13,787.19
  4. Step 4: Simplify right side
    21,336.41x = 405,856,579.68
  5. Step 5: Solve for x
    x = 405,856,579.68/21,336.41
  6. Step 6: Final answer
    x = 19,021.78

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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.