Home / 20,940.93-28,897.69-11,989.27

Finding the Fourth Proportional to 20,940.93, 28,897.69 and 11,989.27

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Solution

The fourth proportional to 20,940.93, 28,897.69 and 11,989.27 is: 16,544.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.93 : 28,897.69 = 11,989.27 : x
  2. Step 2: Convert to fraction form
    20,940.93/28,897.69 = 11,989.27/x
  3. Step 3: Cross multiply
    20,940.93x = 28,897.69 × 11,989.27
  4. Step 4: Simplify right side
    20,940.93x = 346,462,207.79
  5. Step 5: Solve for x
    x = 346,462,207.79/20,940.93
  6. Step 6: Final answer
    x = 16,544.74

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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.