Home / 30,620.48-42,260.87-18,690.73

Finding the Fourth Proportional to 30,620.48, 42,260.87 and 18,690.73

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Solution

The fourth proportional to 30,620.48, 42,260.87 and 18,690.73 is: 25,796.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620.48 : 42,260.87 = 18,690.73 : x
  2. Step 2: Convert to fraction form
    30,620.48/42,260.87 = 18,690.73/x
  3. Step 3: Cross multiply
    30,620.48x = 42,260.87 × 18,690.73
  4. Step 4: Simplify right side
    30,620.48x = 789,886,451.81
  5. Step 5: Solve for x
    x = 789,886,451.81/30,620.48
  6. Step 6: Final answer
    x = 25,796.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.