Home / 27,378.78-37,782.67-15,442.08

Finding the Fourth Proportional to 27,378.78, 37,782.67 and 15,442.08

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Solution

The fourth proportional to 27,378.78, 37,782.67 and 15,442.08 is: 21,310.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,378.78 : 37,782.67 = 15,442.08 : x
  2. Step 2: Convert to fraction form
    27,378.78/37,782.67 = 15,442.08/x
  3. Step 3: Cross multiply
    27,378.78x = 37,782.67 × 15,442.08
  4. Step 4: Simplify right side
    27,378.78x = 583,442,935.54
  5. Step 5: Solve for x
    x = 583,442,935.54/27,378.78
  6. Step 6: Final answer
    x = 21,310.04

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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.