Home / 21,494.87-29,664.27-12,420.62

Finding the Fourth Proportional to 21,494.87, 29,664.27 and 12,420.62

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Solution

The fourth proportional to 21,494.87, 29,664.27 and 12,420.62 is: 17,141.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,494.87 : 29,664.27 = 12,420.62 : x
  2. Step 2: Convert to fraction form
    21,494.87/29,664.27 = 12,420.62/x
  3. Step 3: Cross multiply
    21,494.87x = 29,664.27 × 12,420.62
  4. Step 4: Simplify right side
    21,494.87x = 368,448,625.25
  5. Step 5: Solve for x
    x = 368,448,625.25/21,494.87
  6. Step 6: Final answer
    x = 17,141.24

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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.