Home / 12,121.93-18,182.91-3,802.60

Finding the Fourth Proportional to 12,121.93, 18,182.91 and 3,802.60

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Solution

The fourth proportional to 12,121.93, 18,182.91 and 3,802.60 is: 5,703.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.93 : 18,182.91 = 3,802.60 : x
  2. Step 2: Convert to fraction form
    12,121.93/18,182.91 = 3,802.60/x
  3. Step 3: Cross multiply
    12,121.93x = 18,182.91 × 3,802.60
  4. Step 4: Simplify right side
    12,121.93x = 69,142,242.65
  5. Step 5: Solve for x
    x = 69,142,242.65/12,121.93
  6. Step 6: Final answer
    x = 5,703.90

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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.