Home / 39,629.24-54,690.90-21,724.29

Finding the Fourth Proportional to 39,629.24, 54,690.90 and 21,724.29

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Solution

The fourth proportional to 39,629.24, 54,690.90 and 21,724.29 is: 29,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,629.24 : 54,690.90 = 21,724.29 : x
  2. Step 2: Convert to fraction form
    39,629.24/54,690.90 = 21,724.29/x
  3. Step 3: Cross multiply
    39,629.24x = 54,690.90 × 21,724.29
  4. Step 4: Simplify right side
    39,629.24x = 1,188,120,971.96
  5. Step 5: Solve for x
    x = 1,188,120,971.96/39,629.24
  6. Step 6: Final answer
    x = 29,980.92

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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.