Home / 39,702.39-54,790.26-21,797.71

Finding the Fourth Proportional to 39,702.39, 54,790.26 and 21,797.71

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Solution

The fourth proportional to 39,702.39, 54,790.26 and 21,797.71 is: 30,081.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,702.39 : 54,790.26 = 21,797.71 : x
  2. Step 2: Convert to fraction form
    39,702.39/54,790.26 = 21,797.71/x
  3. Step 3: Cross multiply
    39,702.39x = 54,790.26 × 21,797.71
  4. Step 4: Simplify right side
    39,702.39x = 1,194,301,979.59
  5. Step 5: Solve for x
    x = 1,194,301,979.59/39,702.39
  6. Step 6: Final answer
    x = 30,081.37

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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.