Home / 21,684.93-29,919.15-13,619.46

Finding the Fourth Proportional to 21,684.93, 29,919.15 and 13,619.46

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Solution

The fourth proportional to 21,684.93, 29,919.15 and 13,619.46 is: 18,791.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684.93 : 29,919.15 = 13,619.46 : x
  2. Step 2: Convert to fraction form
    21,684.93/29,919.15 = 13,619.46/x
  3. Step 3: Cross multiply
    21,684.93x = 29,919.15 × 13,619.46
  4. Step 4: Simplify right side
    21,684.93x = 407,482,666.66
  5. Step 5: Solve for x
    x = 407,482,666.66/21,684.93
  6. Step 6: Final answer
    x = 18,791.05

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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.