Home / 21,639.84-29,863.49-13,573.84

Finding the Fourth Proportional to 21,639.84, 29,863.49 and 13,573.84

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Solution

The fourth proportional to 21,639.84, 29,863.49 and 13,573.84 is: 18,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,639.84 : 29,863.49 = 13,573.84 : x
  2. Step 2: Convert to fraction form
    21,639.84/29,863.49 = 13,573.84/x
  3. Step 3: Cross multiply
    21,639.84x = 29,863.49 × 13,573.84
  4. Step 4: Simplify right side
    21,639.84x = 405,362,096.07
  5. Step 5: Solve for x
    x = 405,362,096.07/21,639.84
  6. Step 6: Final answer
    x = 18,732.21

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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.