Home / 20,795.56-28,698.44-12,729.05

Finding the Fourth Proportional to 20,795.56, 28,698.44 and 12,729.05

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Solution

The fourth proportional to 20,795.56, 28,698.44 and 12,729.05 is: 17,566.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.56 : 28,698.44 = 12,729.05 : x
  2. Step 2: Convert to fraction form
    20,795.56/28,698.44 = 12,729.05/x
  3. Step 3: Cross multiply
    20,795.56x = 28,698.44 × 12,729.05
  4. Step 4: Simplify right side
    20,795.56x = 365,303,849.76
  5. Step 5: Solve for x
    x = 365,303,849.76/20,795.56
  6. Step 6: Final answer
    x = 17,566.44

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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.