Home / 20,708.63-28,576.10-11,756.51

Finding the Fourth Proportional to 20,708.63, 28,576.10 and 11,756.51

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Solution

The fourth proportional to 20,708.63, 28,576.10 and 11,756.51 is: 16,222.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.63 : 28,576.10 = 11,756.51 : x
  2. Step 2: Convert to fraction form
    20,708.63/28,576.10 = 11,756.51/x
  3. Step 3: Cross multiply
    20,708.63x = 28,576.10 × 11,756.51
  4. Step 4: Simplify right side
    20,708.63x = 335,955,003.75
  5. Step 5: Solve for x
    x = 335,955,003.75/20,708.63
  6. Step 6: Final answer
    x = 16,222.95

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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.