Home / 20,506.96-28,299.72-11,554.64

Finding the Fourth Proportional to 20,506.96, 28,299.72 and 11,554.64

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Solution

The fourth proportional to 20,506.96, 28,299.72 and 11,554.64 is: 15,945.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.96 : 28,299.72 = 11,554.64 : x
  2. Step 2: Convert to fraction form
    20,506.96/28,299.72 = 11,554.64/x
  3. Step 3: Cross multiply
    20,506.96x = 28,299.72 × 11,554.64
  4. Step 4: Simplify right side
    20,506.96x = 326,993,076.70
  5. Step 5: Solve for x
    x = 326,993,076.70/20,506.96
  6. Step 6: Final answer
    x = 15,945.47

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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.