Home / 30,397.12-45,589.89-12,879.25

Finding the Fourth Proportional to 30,397.12, 45,589.89 and 12,879.25

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Solution

The fourth proportional to 30,397.12, 45,589.89 and 12,879.25 is: 19,316.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,397.12 : 45,589.89 = 12,879.25 : x
  2. Step 2: Convert to fraction form
    30,397.12/45,589.89 = 12,879.25/x
  3. Step 3: Cross multiply
    30,397.12x = 45,589.89 × 12,879.25
  4. Step 4: Simplify right side
    30,397.12x = 587,163,590.78
  5. Step 5: Solve for x
    x = 587,163,590.78/30,397.12
  6. Step 6: Final answer
    x = 19,316.42

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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.