Home / 20,107.80-30,125.70-9,696.60

Finding the Fourth Proportional to 20,107.80, 30,125.70 and 9,696.60

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Solution

The fourth proportional to 20,107.80, 30,125.70 and 9,696.60 is: 14,527.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.80 : 30,125.70 = 9,696.60 : x
  2. Step 2: Convert to fraction form
    20,107.80/30,125.70 = 9,696.60/x
  3. Step 3: Cross multiply
    20,107.80x = 30,125.70 × 9,696.60
  4. Step 4: Simplify right side
    20,107.80x = 292,116,862.62
  5. Step 5: Solve for x
    x = 292,116,862.62/20,107.80
  6. Step 6: Final answer
    x = 14,527.54

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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.