Home / 27,143.73-40,668.84-21,218.31

Finding the Fourth Proportional to 27,143.73, 40,668.84 and 21,218.31

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Solution

The fourth proportional to 27,143.73, 40,668.84 and 21,218.31 is: 31,790.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,143.73 : 40,668.84 = 21,218.31 : x
  2. Step 2: Convert to fraction form
    27,143.73/40,668.84 = 21,218.31/x
  3. Step 3: Cross multiply
    27,143.73x = 40,668.84 × 21,218.31
  4. Step 4: Simplify right side
    27,143.73x = 862,924,054.46
  5. Step 5: Solve for x
    x = 862,924,054.46/27,143.73
  6. Step 6: Final answer
    x = 31,790.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.