Home / 12,158.36-18,236.88-3,393.08

Finding the Fourth Proportional to 12,158.36, 18,236.88 and 3,393.08

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Solution

The fourth proportional to 12,158.36, 18,236.88 and 3,393.08 is: 5,089.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.36 : 18,236.88 = 3,393.08 : x
  2. Step 2: Convert to fraction form
    12,158.36/18,236.88 = 3,393.08/x
  3. Step 3: Cross multiply
    12,158.36x = 18,236.88 × 3,393.08
  4. Step 4: Simplify right side
    12,158.36x = 61,879,192.79
  5. Step 5: Solve for x
    x = 61,879,192.79/12,158.36
  6. Step 6: Final answer
    x = 5,089.44

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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.