Home / 20,880.44-28,815.90-12,495.32

Finding the Fourth Proportional to 20,880.44, 28,815.90 and 12,495.32

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Solution

The fourth proportional to 20,880.44, 28,815.90 and 12,495.32 is: 17,244.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.44 : 28,815.90 = 12,495.32 : x
  2. Step 2: Convert to fraction form
    20,880.44/28,815.90 = 12,495.32/x
  3. Step 3: Cross multiply
    20,880.44x = 28,815.90 × 12,495.32
  4. Step 4: Simplify right side
    20,880.44x = 360,063,891.59
  5. Step 5: Solve for x
    x = 360,063,891.59/20,880.44
  6. Step 6: Final answer
    x = 17,244.08

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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.