Home / 21,046.80-29,043.28-11,615.32

Finding the Fourth Proportional to 21,046.80, 29,043.28 and 11,615.32

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Solution

The fourth proportional to 21,046.80, 29,043.28 and 11,615.32 is: 16,028.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.80 : 29,043.28 = 11,615.32 : x
  2. Step 2: Convert to fraction form
    21,046.80/29,043.28 = 11,615.32/x
  3. Step 3: Cross multiply
    21,046.80x = 29,043.28 × 11,615.32
  4. Step 4: Simplify right side
    21,046.80x = 337,346,991.05
  5. Step 5: Solve for x
    x = 337,346,991.05/21,046.80
  6. Step 6: Final answer
    x = 16,028.42

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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.