Home / 12,120.41-18,188.91-4,724.93

Finding the Fourth Proportional to 12,120.41, 18,188.91 and 4,724.93

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Solution

The fourth proportional to 12,120.41, 18,188.91 and 4,724.93 is: 7,090.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.41 : 18,188.91 = 4,724.93 : x
  2. Step 2: Convert to fraction form
    12,120.41/18,188.91 = 4,724.93/x
  3. Step 3: Cross multiply
    12,120.41x = 18,188.91 × 4,724.93
  4. Step 4: Simplify right side
    12,120.41x = 85,941,235.58
  5. Step 5: Solve for x
    x = 85,941,235.58/12,120.41
  6. Step 6: Final answer
    x = 7,090.62

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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.