Home / 12,084.58-18,128.12-4,187.08

Finding the Fourth Proportional to 12,084.58, 18,128.12 and 4,187.08

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Solution

The fourth proportional to 12,084.58, 18,128.12 and 4,187.08 is: 6,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,084.58 : 18,128.12 = 4,187.08 : x
  2. Step 2: Convert to fraction form
    12,084.58/18,128.12 = 4,187.08/x
  3. Step 3: Cross multiply
    12,084.58x = 18,128.12 × 4,187.08
  4. Step 4: Simplify right side
    12,084.58x = 75,903,794.33
  5. Step 5: Solve for x
    x = 75,903,794.33/12,084.58
  6. Step 6: Final answer
    x = 6,281.05

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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.