Home / 21,377.62-29,474.12-13,811.14

Finding the Fourth Proportional to 21,377.62, 29,474.12 and 13,811.14

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Solution

The fourth proportional to 21,377.62, 29,474.12 and 13,811.14 is: 19,041.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.62 : 29,474.12 = 13,811.14 : x
  2. Step 2: Convert to fraction form
    21,377.62/29,474.12 = 13,811.14/x
  3. Step 3: Cross multiply
    21,377.62x = 29,474.12 × 13,811.14
  4. Step 4: Simplify right side
    21,377.62x = 407,071,197.70
  5. Step 5: Solve for x
    x = 407,071,197.70/21,377.62
  6. Step 6: Final answer
    x = 19,041.93

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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.