Home / 27,804.78-38,371.10-15,228.72

Finding the Fourth Proportional to 27,804.78, 38,371.10 and 15,228.72

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Solution

The fourth proportional to 27,804.78, 38,371.10 and 15,228.72 is: 21,015.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,804.78 : 38,371.10 = 15,228.72 : x
  2. Step 2: Convert to fraction form
    27,804.78/38,371.10 = 15,228.72/x
  3. Step 3: Cross multiply
    27,804.78x = 38,371.10 × 15,228.72
  4. Step 4: Simplify right side
    27,804.78x = 584,342,661.85
  5. Step 5: Solve for x
    x = 584,342,661.85/27,804.78
  6. Step 6: Final answer
    x = 21,015.91

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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.