Home / 12,738.80-19,109.41-4,948.22

Finding the Fourth Proportional to 12,738.80, 19,109.41 and 4,948.22

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Solution

The fourth proportional to 12,738.80, 19,109.41 and 4,948.22 is: 7,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.80 : 19,109.41 = 4,948.22 : x
  2. Step 2: Convert to fraction form
    12,738.80/19,109.41 = 4,948.22/x
  3. Step 3: Cross multiply
    12,738.80x = 19,109.41 × 4,948.22
  4. Step 4: Simplify right side
    12,738.80x = 94,557,564.75
  5. Step 5: Solve for x
    x = 94,557,564.75/12,738.80
  6. Step 6: Final answer
    x = 7,422.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.