Home / 20,852.04-28,777.86-11,900.88

Finding the Fourth Proportional to 20,852.04, 28,777.86 and 11,900.88

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Solution

The fourth proportional to 20,852.04, 28,777.86 and 11,900.88 is: 16,424.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.04 : 28,777.86 = 11,900.88 : x
  2. Step 2: Convert to fraction form
    20,852.04/28,777.86 = 11,900.88/x
  3. Step 3: Cross multiply
    20,852.04x = 28,777.86 × 11,900.88
  4. Step 4: Simplify right side
    20,852.04x = 342,481,858.52
  5. Step 5: Solve for x
    x = 342,481,858.52/20,852.04
  6. Step 6: Final answer
    x = 16,424.38

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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.