Home / 20,651.58-28,498.70-11,576.34

Finding the Fourth Proportional to 20,651.58, 28,498.70 and 11,576.34

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Solution

The fourth proportional to 20,651.58, 28,498.70 and 11,576.34 is: 15,975.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.58 : 28,498.70 = 11,576.34 : x
  2. Step 2: Convert to fraction form
    20,651.58/28,498.70 = 11,576.34/x
  3. Step 3: Cross multiply
    20,651.58x = 28,498.70 × 11,576.34
  4. Step 4: Simplify right side
    20,651.58x = 329,910,669.70
  5. Step 5: Solve for x
    x = 329,910,669.70/20,651.58
  6. Step 6: Final answer
    x = 15,975.08

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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.