Home / 12,218.60-18,330.70-4,427.44

Finding the Fourth Proportional to 12,218.60, 18,330.70 and 4,427.44

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Solution

The fourth proportional to 12,218.60, 18,330.70 and 4,427.44 is: 6,642.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.60 : 18,330.70 = 4,427.44 : x
  2. Step 2: Convert to fraction form
    12,218.60/18,330.70 = 4,427.44/x
  3. Step 3: Cross multiply
    12,218.60x = 18,330.70 × 4,427.44
  4. Step 4: Simplify right side
    12,218.60x = 81,158,074.41
  5. Step 5: Solve for x
    x = 81,158,074.41/12,218.60
  6. Step 6: Final answer
    x = 6,642.17

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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.