Home / 20,516.44-28,307.64-11,563.96

Finding the Fourth Proportional to 20,516.44, 28,307.64 and 11,563.96

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Solution

The fourth proportional to 20,516.44, 28,307.64 and 11,563.96 is: 15,955.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.44 : 28,307.64 = 11,563.96 : x
  2. Step 2: Convert to fraction form
    20,516.44/28,307.64 = 11,563.96/x
  3. Step 3: Cross multiply
    20,516.44x = 28,307.64 × 11,563.96
  4. Step 4: Simplify right side
    20,516.44x = 327,348,416.65
  5. Step 5: Solve for x
    x = 327,348,416.65/20,516.44
  6. Step 6: Final answer
    x = 15,955.42

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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.