Home / 12,219.21-16,860.32-7,184.44

Finding the Fourth Proportional to 12,219.21, 16,860.32 and 7,184.44

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Solution

The fourth proportional to 12,219.21, 16,860.32 and 7,184.44 is: 9,913.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.21 : 16,860.32 = 7,184.44 : x
  2. Step 2: Convert to fraction form
    12,219.21/16,860.32 = 7,184.44/x
  3. Step 3: Cross multiply
    12,219.21x = 16,860.32 × 7,184.44
  4. Step 4: Simplify right side
    12,219.21x = 121,131,896.74
  5. Step 5: Solve for x
    x = 121,131,896.74/12,219.21
  6. Step 6: Final answer
    x = 9,913.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.