Home / 13,728.26-18,948.39-9,018.92

Finding the Fourth Proportional to 13,728.26, 18,948.39 and 9,018.92

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Solution

The fourth proportional to 13,728.26, 18,948.39 and 9,018.92 is: 12,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.26 : 18,948.39 = 9,018.92 : x
  2. Step 2: Convert to fraction form
    13,728.26/18,948.39 = 9,018.92/x
  3. Step 3: Cross multiply
    13,728.26x = 18,948.39 × 9,018.92
  4. Step 4: Simplify right side
    13,728.26x = 170,894,013.54
  5. Step 5: Solve for x
    x = 170,894,013.54/13,728.26
  6. Step 6: Final answer
    x = 12,448.34

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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.