Home / 39,163.45-54,045.39-21,258.31

Finding the Fourth Proportional to 39,163.45, 54,045.39 and 21,258.31

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Solution

The fourth proportional to 39,163.45, 54,045.39 and 21,258.31 is: 29,336.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,163.45 : 54,045.39 = 21,258.31 : x
  2. Step 2: Convert to fraction form
    39,163.45/54,045.39 = 21,258.31/x
  3. Step 3: Cross multiply
    39,163.45x = 54,045.39 × 21,258.31
  4. Step 4: Simplify right side
    39,163.45x = 1,148,913,654.69
  5. Step 5: Solve for x
    x = 1,148,913,654.69/39,163.45
  6. Step 6: Final answer
    x = 29,336.37

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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.