Home / 21,055.39-29,053.81-11,623.88

Finding the Fourth Proportional to 21,055.39, 29,053.81 and 11,623.88

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Solution

The fourth proportional to 21,055.39, 29,053.81 and 11,623.88 is: 16,039.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.39 : 29,053.81 = 11,623.88 : x
  2. Step 2: Convert to fraction form
    21,055.39/29,053.81 = 11,623.88/x
  3. Step 3: Cross multiply
    21,055.39x = 29,053.81 × 11,623.88
  4. Step 4: Simplify right side
    21,055.39x = 337,718,000.98
  5. Step 5: Solve for x
    x = 337,718,000.98/21,055.39
  6. Step 6: Final answer
    x = 16,039.50

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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.