Home / 39,629.16-54,688.29-21,724.82

Finding the Fourth Proportional to 39,629.16, 54,688.29 and 21,724.82

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Solution

The fourth proportional to 39,629.16, 54,688.29 and 21,724.82 is: 29,980.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,629.16 : 54,688.29 = 21,724.82 : x
  2. Step 2: Convert to fraction form
    39,629.16/54,688.29 = 21,724.82/x
  3. Step 3: Cross multiply
    39,629.16x = 54,688.29 × 21,724.82
  4. Step 4: Simplify right side
    39,629.16x = 1,188,092,982.92
  5. Step 5: Solve for x
    x = 1,188,092,982.92/39,629.16
  6. Step 6: Final answer
    x = 29,980.27

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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.