Home / 12,578.36-18,867.35-3,218.30

Finding the Fourth Proportional to 12,578.36, 18,867.35 and 3,218.30

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Solution

The fourth proportional to 12,578.36, 18,867.35 and 3,218.30 is: 4,827.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.36 : 18,867.35 = 3,218.30 : x
  2. Step 2: Convert to fraction form
    12,578.36/18,867.35 = 3,218.30/x
  3. Step 3: Cross multiply
    12,578.36x = 18,867.35 × 3,218.30
  4. Step 4: Simplify right side
    12,578.36x = 60,720,758.86
  5. Step 5: Solve for x
    x = 60,720,758.86/12,578.36
  6. Step 6: Final answer
    x = 4,827.40

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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.