Home / 19,410.36-29,115.54-12,878.28

Finding the Fourth Proportional to 19,410.36, 29,115.54 and 12,878.28

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Solution

The fourth proportional to 19,410.36, 29,115.54 and 12,878.28 is: 19,317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,410.36 : 29,115.54 = 12,878.28 : x
  2. Step 2: Convert to fraction form
    19,410.36/29,115.54 = 12,878.28/x
  3. Step 3: Cross multiply
    19,410.36x = 29,115.54 × 12,878.28
  4. Step 4: Simplify right side
    19,410.36x = 374,958,076.47
  5. Step 5: Solve for x
    x = 374,958,076.47/19,410.36
  6. Step 6: Final answer
    x = 19,317.42

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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.