Home / 39,629.40-54,688.32-21,725.52

Finding the Fourth Proportional to 39,629.40, 54,688.32 and 21,725.52

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Solution

The fourth proportional to 39,629.40, 54,688.32 and 21,725.52 is: 29,981.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,629.40 : 54,688.32 = 21,725.52 : x
  2. Step 2: Convert to fraction form
    39,629.40/54,688.32 = 21,725.52/x
  3. Step 3: Cross multiply
    39,629.40x = 54,688.32 × 21,725.52
  4. Step 4: Simplify right side
    39,629.40x = 1,188,132,189.93
  5. Step 5: Solve for x
    x = 1,188,132,189.93/39,629.40
  6. Step 6: Final answer
    x = 29,981.08

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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.