Home / 27,930.62-38,538.74-15,666.42

Finding the Fourth Proportional to 27,930.62, 38,538.74 and 15,666.42

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Solution

The fourth proportional to 27,930.62, 38,538.74 and 15,666.42 is: 21,616.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,930.62 : 38,538.74 = 15,666.42 : x
  2. Step 2: Convert to fraction form
    27,930.62/38,538.74 = 15,666.42/x
  3. Step 3: Cross multiply
    27,930.62x = 38,538.74 × 15,666.42
  4. Step 4: Simplify right side
    27,930.62x = 603,763,816.09
  5. Step 5: Solve for x
    x = 603,763,816.09/27,930.62
  6. Step 6: Final answer
    x = 21,616.56

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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.