Home / 21,440.35-29,591.49-13,476.43

Finding the Fourth Proportional to 21,440.35, 29,591.49 and 13,476.43

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Solution

The fourth proportional to 21,440.35, 29,591.49 and 13,476.43 is: 18,599.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.35 : 29,591.49 = 13,476.43 : x
  2. Step 2: Convert to fraction form
    21,440.35/29,591.49 = 13,476.43/x
  3. Step 3: Cross multiply
    21,440.35x = 29,591.49 × 13,476.43
  4. Step 4: Simplify right side
    21,440.35x = 398,787,643.58
  5. Step 5: Solve for x
    x = 398,787,643.58/21,440.35
  6. Step 6: Final answer
    x = 18,599.87

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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.