Home / 20,804.79-28,711.50-11,373.96

Finding the Fourth Proportional to 20,804.79, 28,711.50 and 11,373.96

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Solution

The fourth proportional to 20,804.79, 28,711.50 and 11,373.96 is: 15,696.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.79 : 28,711.50 = 11,373.96 : x
  2. Step 2: Convert to fraction form
    20,804.79/28,711.50 = 11,373.96/x
  3. Step 3: Cross multiply
    20,804.79x = 28,711.50 × 11,373.96
  4. Step 4: Simplify right side
    20,804.79x = 326,563,452.54
  5. Step 5: Solve for x
    x = 326,563,452.54/20,804.79
  6. Step 6: Final answer
    x = 15,696.55

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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.