Home / 20,845.22-28,766.58-12,347.82

Finding the Fourth Proportional to 20,845.22, 28,766.58 and 12,347.82

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Solution

The fourth proportional to 20,845.22, 28,766.58 and 12,347.82 is: 17,040.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.22 : 28,766.58 = 12,347.82 : x
  2. Step 2: Convert to fraction form
    20,845.22/28,766.58 = 12,347.82/x
  3. Step 3: Cross multiply
    20,845.22x = 28,766.58 × 12,347.82
  4. Step 4: Simplify right side
    20,845.22x = 355,204,551.86
  5. Step 5: Solve for x
    x = 355,204,551.86/20,845.22
  6. Step 6: Final answer
    x = 17,040.10

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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.