Home / 19,448.12-29,128.40-13,630.70

Finding the Fourth Proportional to 19,448.12, 29,128.40 and 13,630.70

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Solution

The fourth proportional to 19,448.12, 29,128.40 and 13,630.70 is: 20,415.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,448.12 : 29,128.40 = 13,630.70 : x
  2. Step 2: Convert to fraction form
    19,448.12/29,128.40 = 13,630.70/x
  3. Step 3: Cross multiply
    19,448.12x = 29,128.40 × 13,630.70
  4. Step 4: Simplify right side
    19,448.12x = 397,040,481.88
  5. Step 5: Solve for x
    x = 397,040,481.88/19,448.12
  6. Step 6: Final answer
    x = 20,415.37

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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.