Home / 19,576.78-27,015.57-11,078.75

Finding the Fourth Proportional to 19,576.78, 27,015.57 and 11,078.75

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Solution

The fourth proportional to 19,576.78, 27,015.57 and 11,078.75 is: 15,288.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,576.78 : 27,015.57 = 11,078.75 : x
  2. Step 2: Convert to fraction form
    19,576.78/27,015.57 = 11,078.75/x
  3. Step 3: Cross multiply
    19,576.78x = 27,015.57 × 11,078.75
  4. Step 4: Simplify right side
    19,576.78x = 299,298,555.67
  5. Step 5: Solve for x
    x = 299,298,555.67/19,576.78
  6. Step 6: Final answer
    x = 15,288.45

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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.