Home / 20,575.26-28,390.23-12,078.36

Finding the Fourth Proportional to 20,575.26, 28,390.23 and 12,078.36

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Solution

The fourth proportional to 20,575.26, 28,390.23 and 12,078.36 is: 16,666.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.26 : 28,390.23 = 12,078.36 : x
  2. Step 2: Convert to fraction form
    20,575.26/28,390.23 = 12,078.36/x
  3. Step 3: Cross multiply
    20,575.26x = 28,390.23 × 12,078.36
  4. Step 4: Simplify right side
    20,575.26x = 342,907,418.42
  5. Step 5: Solve for x
    x = 342,907,418.42/20,575.26
  6. Step 6: Final answer
    x = 16,666.01

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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.