Home / 20,940.93-28,903.46-11,993.58

Finding the Fourth Proportional to 20,940.93, 28,903.46 and 11,993.58

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Solution

The fourth proportional to 20,940.93, 28,903.46 and 11,993.58 is: 16,553.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.93 : 28,903.46 = 11,993.58 : x
  2. Step 2: Convert to fraction form
    20,940.93/28,903.46 = 11,993.58/x
  3. Step 3: Cross multiply
    20,940.93x = 28,903.46 × 11,993.58
  4. Step 4: Simplify right side
    20,940.93x = 346,655,899.82
  5. Step 5: Solve for x
    x = 346,655,899.82/20,940.93
  6. Step 6: Final answer
    x = 16,553.99

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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.