Home / 21,055.74-29,054.44-12,558.33

Finding the Fourth Proportional to 21,055.74, 29,054.44 and 12,558.33

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Solution

The fourth proportional to 21,055.74, 29,054.44 and 12,558.33 is: 17,329.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.74 : 29,054.44 = 12,558.33 : x
  2. Step 2: Convert to fraction form
    21,055.74/29,054.44 = 12,558.33/x
  3. Step 3: Cross multiply
    21,055.74x = 29,054.44 × 12,558.33
  4. Step 4: Simplify right side
    21,055.74x = 364,875,245.49
  5. Step 5: Solve for x
    x = 364,875,245.49/21,055.74
  6. Step 6: Final answer
    x = 17,329.02

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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.