Home / 20,271.25-30,393.33-8,421.94

Finding the Fourth Proportional to 20,271.25, 30,393.33 and 8,421.94

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Solution

The fourth proportional to 20,271.25, 30,393.33 and 8,421.94 is: 12,627.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.25 : 30,393.33 = 8,421.94 : x
  2. Step 2: Convert to fraction form
    20,271.25/30,393.33 = 8,421.94/x
  3. Step 3: Cross multiply
    20,271.25x = 30,393.33 × 8,421.94
  4. Step 4: Simplify right side
    20,271.25x = 255,970,801.66
  5. Step 5: Solve for x
    x = 255,970,801.66/20,271.25
  6. Step 6: Final answer
    x = 12,627.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.