Home / 20,755.88-28,642.50-11,804.36

Finding the Fourth Proportional to 20,755.88, 28,642.50 and 11,804.36

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Solution

The fourth proportional to 20,755.88, 28,642.50 and 11,804.36 is: 16,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.88 : 28,642.50 = 11,804.36 : x
  2. Step 2: Convert to fraction form
    20,755.88/28,642.50 = 11,804.36/x
  3. Step 3: Cross multiply
    20,755.88x = 28,642.50 × 11,804.36
  4. Step 4: Simplify right side
    20,755.88x = 338,106,381.30
  5. Step 5: Solve for x
    x = 338,106,381.30/20,755.88
  6. Step 6: Final answer
    x = 16,289.67

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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.