Home / 20,756.85-28,644.33-11,804.35

Finding the Fourth Proportional to 20,756.85, 28,644.33 and 11,804.35

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Solution

The fourth proportional to 20,756.85, 28,644.33 and 11,804.35 is: 16,289.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.85 : 28,644.33 = 11,804.35 : x
  2. Step 2: Convert to fraction form
    20,756.85/28,644.33 = 11,804.35/x
  3. Step 3: Cross multiply
    20,756.85x = 28,644.33 × 11,804.35
  4. Step 4: Simplify right side
    20,756.85x = 338,127,696.84
  5. Step 5: Solve for x
    x = 338,127,696.84/20,756.85
  6. Step 6: Final answer
    x = 16,289.93

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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.