Home / 12,214.89-16,856.73-7,179.21

Finding the Fourth Proportional to 12,214.89, 16,856.73 and 7,179.21

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Solution

The fourth proportional to 12,214.89, 16,856.73 and 7,179.21 is: 9,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.89 : 16,856.73 = 7,179.21 : x
  2. Step 2: Convert to fraction form
    12,214.89/16,856.73 = 7,179.21/x
  3. Step 3: Cross multiply
    12,214.89x = 16,856.73 × 7,179.21
  4. Step 4: Simplify right side
    12,214.89x = 121,018,004.58
  5. Step 5: Solve for x
    x = 121,018,004.58/12,214.89
  6. Step 6: Final answer
    x = 9,907.42

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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.