Home / 12,218.58-18,327.87-4,321.89

Finding the Fourth Proportional to 12,218.58, 18,327.87 and 4,321.89

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Solution

The fourth proportional to 12,218.58, 18,327.87 and 4,321.89 is: 6,482.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.58 : 18,327.87 = 4,321.89 : x
  2. Step 2: Convert to fraction form
    12,218.58/18,327.87 = 4,321.89/x
  3. Step 3: Cross multiply
    12,218.58x = 18,327.87 × 4,321.89
  4. Step 4: Simplify right side
    12,218.58x = 79,211,038.07
  5. Step 5: Solve for x
    x = 79,211,038.07/12,218.58
  6. Step 6: Final answer
    x = 6,482.84

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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.