Home / 39,702.51-54,789.56-21,798.68

Finding the Fourth Proportional to 39,702.51, 54,789.56 and 21,798.68

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Solution

The fourth proportional to 39,702.51, 54,789.56 and 21,798.68 is: 30,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,702.51 : 54,789.56 = 21,798.68 : x
  2. Step 2: Convert to fraction form
    39,702.51/54,789.56 = 21,798.68/x
  3. Step 3: Cross multiply
    39,702.51x = 54,789.56 × 21,798.68
  4. Step 4: Simplify right side
    39,702.51x = 1,194,339,866.33
  5. Step 5: Solve for x
    x = 1,194,339,866.33/39,702.51
  6. Step 6: Final answer
    x = 30,082.23

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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.