Home / 20,506.33-30,760.35-10,639.27

Finding the Fourth Proportional to 20,506.33, 30,760.35 and 10,639.27

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Solution

The fourth proportional to 20,506.33, 30,760.35 and 10,639.27 is: 15,959.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.33 : 30,760.35 = 10,639.27 : x
  2. Step 2: Convert to fraction form
    20,506.33/30,760.35 = 10,639.27/x
  3. Step 3: Cross multiply
    20,506.33x = 30,760.35 × 10,639.27
  4. Step 4: Simplify right side
    20,506.33x = 327,267,668.94
  5. Step 5: Solve for x
    x = 327,267,668.94/20,506.33
  6. Step 6: Final answer
    x = 15,959.35

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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.