Home / 20,516.22-28,313.10-11,564.10

Finding the Fourth Proportional to 20,516.22, 28,313.10 and 11,564.10

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Solution

The fourth proportional to 20,516.22, 28,313.10 and 11,564.10 is: 15,958.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.22 : 28,313.10 = 11,564.10 : x
  2. Step 2: Convert to fraction form
    20,516.22/28,313.10 = 11,564.10/x
  3. Step 3: Cross multiply
    20,516.22x = 28,313.10 × 11,564.10
  4. Step 4: Simplify right side
    20,516.22x = 327,415,519.71
  5. Step 5: Solve for x
    x = 327,415,519.71/20,516.22
  6. Step 6: Final answer
    x = 15,958.86

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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.