Home / 12,120.48-18,173.84-4,218.93

Finding the Fourth Proportional to 12,120.48, 18,173.84 and 4,218.93

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Solution

The fourth proportional to 12,120.48, 18,173.84 and 4,218.93 is: 6,326.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.48 : 18,173.84 = 4,218.93 : x
  2. Step 2: Convert to fraction form
    12,120.48/18,173.84 = 4,218.93/x
  3. Step 3: Cross multiply
    12,120.48x = 18,173.84 × 4,218.93
  4. Step 4: Simplify right side
    12,120.48x = 76,674,137.70
  5. Step 5: Solve for x
    x = 76,674,137.70/12,120.48
  6. Step 6: Final answer
    x = 6,326.00

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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.