Home / 39,702.30-54,789.75-21,798.06

Finding the Fourth Proportional to 39,702.30, 54,789.75 and 21,798.06

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Solution

The fourth proportional to 39,702.30, 54,789.75 and 21,798.06 is: 30,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,702.30 : 54,789.75 = 21,798.06 : x
  2. Step 2: Convert to fraction form
    39,702.30/54,789.75 = 21,798.06/x
  3. Step 3: Cross multiply
    39,702.30x = 54,789.75 × 21,798.06
  4. Step 4: Simplify right side
    39,702.30x = 1,194,310,257.89
  5. Step 5: Solve for x
    x = 1,194,310,257.89/39,702.30
  6. Step 6: Final answer
    x = 30,081.64

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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.