Home / 20,528.85-28,329.70-11,576.43

Finding the Fourth Proportional to 20,528.85, 28,329.70 and 11,576.43

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Solution

The fourth proportional to 20,528.85, 28,329.70 and 11,576.43 is: 15,975.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.85 : 28,329.70 = 11,576.43 : x
  2. Step 2: Convert to fraction form
    20,528.85/28,329.70 = 11,576.43/x
  3. Step 3: Cross multiply
    20,528.85x = 28,329.70 × 11,576.43
  4. Step 4: Simplify right side
    20,528.85x = 327,956,788.97
  5. Step 5: Solve for x
    x = 327,956,788.97/20,528.85
  6. Step 6: Final answer
    x = 15,975.41

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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.