Home / 20,106.78-30,137.49-9,706.38

Finding the Fourth Proportional to 20,106.78, 30,137.49 and 9,706.38

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Solution

The fourth proportional to 20,106.78, 30,137.49 and 9,706.38 is: 14,548.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.78 : 30,137.49 = 9,706.38 : x
  2. Step 2: Convert to fraction form
    20,106.78/30,137.49 = 9,706.38/x
  3. Step 3: Cross multiply
    20,106.78x = 30,137.49 × 9,706.38
  4. Step 4: Simplify right side
    20,106.78x = 292,525,930.19
  5. Step 5: Solve for x
    x = 292,525,930.19/20,106.78
  6. Step 6: Final answer
    x = 14,548.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.