Home / 12,320.56-18,480.68-3,086.56

Finding the Fourth Proportional to 12,320.56, 18,480.68 and 3,086.56

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Solution

The fourth proportional to 12,320.56, 18,480.68 and 3,086.56 is: 4,629.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.56 : 18,480.68 = 3,086.56 : x
  2. Step 2: Convert to fraction form
    12,320.56/18,480.68 = 3,086.56/x
  3. Step 3: Cross multiply
    12,320.56x = 18,480.68 × 3,086.56
  4. Step 4: Simplify right side
    12,320.56x = 57,041,727.66
  5. Step 5: Solve for x
    x = 57,041,727.66/12,320.56
  6. Step 6: Final answer
    x = 4,629.80

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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.