Home / 20,938.41-28,893.33-11,983.86

Finding the Fourth Proportional to 20,938.41, 28,893.33 and 11,983.86

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Solution

The fourth proportional to 20,938.41, 28,893.33 and 11,983.86 is: 16,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.41 : 28,893.33 = 11,983.86 : x
  2. Step 2: Convert to fraction form
    20,938.41/28,893.33 = 11,983.86/x
  3. Step 3: Cross multiply
    20,938.41x = 28,893.33 × 11,983.86
  4. Step 4: Simplify right side
    20,938.41x = 346,253,621.65
  5. Step 5: Solve for x
    x = 346,253,621.65/20,938.41
  6. Step 6: Final answer
    x = 16,536.77

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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.