Home / 39,702.24-54,789.18-21,798.39

Finding the Fourth Proportional to 39,702.24, 54,789.18 and 21,798.39

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Solution

The fourth proportional to 39,702.24, 54,789.18 and 21,798.39 is: 30,081.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,702.24 : 54,789.18 = 21,798.39 : x
  2. Step 2: Convert to fraction form
    39,702.24/54,789.18 = 21,798.39/x
  3. Step 3: Cross multiply
    39,702.24x = 54,789.18 × 21,798.39
  4. Step 4: Simplify right side
    39,702.24x = 1,194,315,913.42
  5. Step 5: Solve for x
    x = 1,194,315,913.42/39,702.24
  6. Step 6: Final answer
    x = 30,081.83

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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.