Home / 27,621.77-38,105.91-18,666

Finding the Fourth Proportional to 27,621.77, 38,105.91 and 18,666

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Solution

The fourth proportional to 27,621.77, 38,105.91 and 18,666 is: 25,750.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,621.77 : 38,105.91 = 18,666 : x
  2. Step 2: Convert to fraction form
    27,621.77/38,105.91 = 18,666/x
  3. Step 3: Cross multiply
    27,621.77x = 38,105.91 × 18,666
  4. Step 4: Simplify right side
    27,621.77x = 711,284,916.06
  5. Step 5: Solve for x
    x = 711,284,916.06/27,621.77
  6. Step 6: Final answer
    x = 25,750.89

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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.