Home / 30,612.25-45,918.38-12,144.25

Finding the Fourth Proportional to 30,612.25, 45,918.38 and 12,144.25

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Solution

The fourth proportional to 30,612.25, 45,918.38 and 12,144.25 is: 18,216.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612.25 : 45,918.38 = 12,144.25 : x
  2. Step 2: Convert to fraction form
    30,612.25/45,918.38 = 12,144.25/x
  3. Step 3: Cross multiply
    30,612.25x = 45,918.38 × 12,144.25
  4. Step 4: Simplify right side
    30,612.25x = 557,644,286.32
  5. Step 5: Solve for x
    x = 557,644,286.32/30,612.25
  6. Step 6: Final answer
    x = 18,216.38

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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.