Home / 12,221.58-18,334.22-4,428.57

Finding the Fourth Proportional to 12,221.58, 18,334.22 and 4,428.57

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Solution

The fourth proportional to 12,221.58, 18,334.22 and 4,428.57 is: 6,643.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.58 : 18,334.22 = 4,428.57 : x
  2. Step 2: Convert to fraction form
    12,221.58/18,334.22 = 4,428.57/x
  3. Step 3: Cross multiply
    12,221.58x = 18,334.22 × 4,428.57
  4. Step 4: Simplify right side
    12,221.58x = 81,194,354.52
  5. Step 5: Solve for x
    x = 81,194,354.52/12,221.58
  6. Step 6: Final answer
    x = 6,643.52

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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.