Home / 21,324.82-29,429.58-12,374.32

Finding the Fourth Proportional to 21,324.82, 29,429.58 and 12,374.32

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Solution

The fourth proportional to 21,324.82, 29,429.58 and 12,374.32 is: 17,077.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.82 : 29,429.58 = 12,374.32 : x
  2. Step 2: Convert to fraction form
    21,324.82/29,429.58 = 12,374.32/x
  3. Step 3: Cross multiply
    21,324.82x = 29,429.58 × 12,374.32
  4. Step 4: Simplify right side
    21,324.82x = 364,171,040.39
  5. Step 5: Solve for x
    x = 364,171,040.39/21,324.82
  6. Step 6: Final answer
    x = 17,077.33

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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.