Home / 20,268.84-30,382.59-11,485.20

Finding the Fourth Proportional to 20,268.84, 30,382.59 and 11,485.20

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Solution

The fourth proportional to 20,268.84, 30,382.59 and 11,485.20 is: 17,216.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.84 : 30,382.59 = 11,485.20 : x
  2. Step 2: Convert to fraction form
    20,268.84/30,382.59 = 11,485.20/x
  3. Step 3: Cross multiply
    20,268.84x = 30,382.59 × 11,485.20
  4. Step 4: Simplify right side
    20,268.84x = 348,950,122.67
  5. Step 5: Solve for x
    x = 348,950,122.67/20,268.84
  6. Step 6: Final answer
    x = 17,216.09

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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.