Home / 13,828.56-19,078.49-8,160.47

Finding the Fourth Proportional to 13,828.56, 19,078.49 and 8,160.47

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Solution

The fourth proportional to 13,828.56, 19,078.49 and 8,160.47 is: 11,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.56 : 19,078.49 = 8,160.47 : x
  2. Step 2: Convert to fraction form
    13,828.56/19,078.49 = 8,160.47/x
  3. Step 3: Cross multiply
    13,828.56x = 19,078.49 × 8,160.47
  4. Step 4: Simplify right side
    13,828.56x = 155,689,369.11
  5. Step 5: Solve for x
    x = 155,689,369.11/13,828.56
  6. Step 6: Final answer
    x = 11,258.54

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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.