Home / 12,080.18-18,122.70-4,289.60

Finding the Fourth Proportional to 12,080.18, 18,122.70 and 4,289.60

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Solution

The fourth proportional to 12,080.18, 18,122.70 and 4,289.60 is: 6,435.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.18 : 18,122.70 = 4,289.60 : x
  2. Step 2: Convert to fraction form
    12,080.18/18,122.70 = 4,289.60/x
  3. Step 3: Cross multiply
    12,080.18x = 18,122.70 × 4,289.60
  4. Step 4: Simplify right side
    12,080.18x = 77,739,133.92
  5. Step 5: Solve for x
    x = 77,739,133.92/12,080.18
  6. Step 6: Final answer
    x = 6,435.26

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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.