Home / 19,338.96-29,021.40-12,418.32

Finding the Fourth Proportional to 19,338.96, 29,021.40 and 12,418.32

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Solution

The fourth proportional to 19,338.96, 29,021.40 and 12,418.32 is: 18,635.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,338.96 : 29,021.40 = 12,418.32 : x
  2. Step 2: Convert to fraction form
    19,338.96/29,021.40 = 12,418.32/x
  3. Step 3: Cross multiply
    19,338.96x = 29,021.40 × 12,418.32
  4. Step 4: Simplify right side
    19,338.96x = 360,397,032.05
  5. Step 5: Solve for x
    x = 360,397,032.05/19,338.96
  6. Step 6: Final answer
    x = 18,635.80

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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.