Home / 12,651.16-18,976.47-4,218.27

Finding the Fourth Proportional to 12,651.16, 18,976.47 and 4,218.27

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Solution

The fourth proportional to 12,651.16, 18,976.47 and 4,218.27 is: 6,327.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.16 : 18,976.47 = 4,218.27 : x
  2. Step 2: Convert to fraction form
    12,651.16/18,976.47 = 4,218.27/x
  3. Step 3: Cross multiply
    12,651.16x = 18,976.47 × 4,218.27
  4. Step 4: Simplify right side
    12,651.16x = 80,047,874.11
  5. Step 5: Solve for x
    x = 80,047,874.11/12,651.16
  6. Step 6: Final answer
    x = 6,327.32

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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.