Home / 20,798.43-28,701.93-11,367.21

Finding the Fourth Proportional to 20,798.43, 28,701.93 and 11,367.21

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Solution

The fourth proportional to 20,798.43, 28,701.93 and 11,367.21 is: 15,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.43 : 28,701.93 = 11,367.21 : x
  2. Step 2: Convert to fraction form
    20,798.43/28,701.93 = 11,367.21/x
  3. Step 3: Cross multiply
    20,798.43x = 28,701.93 × 11,367.21
  4. Step 4: Simplify right side
    20,798.43x = 326,260,865.72
  5. Step 5: Solve for x
    x = 326,260,865.72/20,798.43
  6. Step 6: Final answer
    x = 15,686.80

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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.