Home / 39,163.79-54,046.07-21,258.79

Finding the Fourth Proportional to 39,163.79, 54,046.07 and 21,258.79

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Solution

The fourth proportional to 39,163.79, 54,046.07 and 21,258.79 is: 29,337.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,163.79 : 54,046.07 = 21,258.79 : x
  2. Step 2: Convert to fraction form
    39,163.79/54,046.07 = 21,258.79/x
  3. Step 3: Cross multiply
    39,163.79x = 54,046.07 × 21,258.79
  4. Step 4: Simplify right side
    39,163.79x = 1,148,953,890.77
  5. Step 5: Solve for x
    x = 1,148,953,890.77/39,163.79
  6. Step 6: Final answer
    x = 29,337.15

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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.