Home / 21,344.64-29,454.31-12,849.51

Finding the Fourth Proportional to 21,344.64, 29,454.31 and 12,849.51

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Solution

The fourth proportional to 21,344.64, 29,454.31 and 12,849.51 is: 17,731.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.64 : 29,454.31 = 12,849.51 : x
  2. Step 2: Convert to fraction form
    21,344.64/29,454.31 = 12,849.51/x
  3. Step 3: Cross multiply
    21,344.64x = 29,454.31 × 12,849.51
  4. Step 4: Simplify right side
    21,344.64x = 378,473,577.40
  5. Step 5: Solve for x
    x = 378,473,577.40/21,344.64
  6. Step 6: Final answer
    x = 17,731.55

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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.