Home / 21,080.84-29,097.62-13,915.98

Finding the Fourth Proportional to 21,080.84, 29,097.62 and 13,915.98

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Solution

The fourth proportional to 21,080.84, 29,097.62 and 13,915.98 is: 19,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.84 : 29,097.62 = 13,915.98 : x
  2. Step 2: Convert to fraction form
    21,080.84/29,097.62 = 13,915.98/x
  3. Step 3: Cross multiply
    21,080.84x = 29,097.62 × 13,915.98
  4. Step 4: Simplify right side
    21,080.84x = 404,921,897.97
  5. Step 5: Solve for x
    x = 404,921,897.97/21,080.84
  6. Step 6: Final answer
    x = 19,208.05

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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.