Home / 20,798.91-28,702.35-11,367.47

Finding the Fourth Proportional to 20,798.91, 28,702.35 and 11,367.47

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Solution

The fourth proportional to 20,798.91, 28,702.35 and 11,367.47 is: 15,687.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.91 : 28,702.35 = 11,367.47 : x
  2. Step 2: Convert to fraction form
    20,798.91/28,702.35 = 11,367.47/x
  3. Step 3: Cross multiply
    20,798.91x = 28,702.35 × 11,367.47
  4. Step 4: Simplify right side
    20,798.91x = 326,273,174.31
  5. Step 5: Solve for x
    x = 326,273,174.31/20,798.91
  6. Step 6: Final answer
    x = 15,687.03

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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.