Home / 13,828.21-19,077.51-8,513.80

Finding the Fourth Proportional to 13,828.21, 19,077.51 and 8,513.80

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Solution

The fourth proportional to 13,828.21, 19,077.51 and 8,513.80 is: 11,745.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.21 : 19,077.51 = 8,513.80 : x
  2. Step 2: Convert to fraction form
    13,828.21/19,077.51 = 8,513.80/x
  3. Step 3: Cross multiply
    13,828.21x = 19,077.51 × 8,513.80
  4. Step 4: Simplify right side
    13,828.21x = 162,422,104.64
  5. Step 5: Solve for x
    x = 162,422,104.64/13,828.21
  6. Step 6: Final answer
    x = 11,745.71

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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.