Home / 20,627.63-28,464.88-12,131.26

Finding the Fourth Proportional to 20,627.63, 28,464.88 and 12,131.26

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Solution

The fourth proportional to 20,627.63, 28,464.88 and 12,131.26 is: 16,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.63 : 28,464.88 = 12,131.26 : x
  2. Step 2: Convert to fraction form
    20,627.63/28,464.88 = 12,131.26/x
  3. Step 3: Cross multiply
    20,627.63x = 28,464.88 × 12,131.26
  4. Step 4: Simplify right side
    20,627.63x = 345,314,860.15
  5. Step 5: Solve for x
    x = 345,314,860.15/20,627.63
  6. Step 6: Final answer
    x = 16,740.40

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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.