Home / 27,379.21-37,788.78-15,442.78

Finding the Fourth Proportional to 27,379.21, 37,788.78 and 15,442.78

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Solution

The fourth proportional to 27,379.21, 37,788.78 and 15,442.78 is: 21,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,379.21 : 37,788.78 = 15,442.78 : x
  2. Step 2: Convert to fraction form
    27,379.21/37,788.78 = 15,442.78/x
  3. Step 3: Cross multiply
    27,379.21x = 37,788.78 × 15,442.78
  4. Step 4: Simplify right side
    27,379.21x = 583,563,816.01
  5. Step 5: Solve for x
    x = 583,563,816.01/27,379.21
  6. Step 6: Final answer
    x = 21,314.12

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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.