Home / 20,506.50-30,727.35-15,485.09

Finding the Fourth Proportional to 20,506.50, 30,727.35 and 15,485.09

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Solution

The fourth proportional to 20,506.50, 30,727.35 and 15,485.09 is: 23,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.50 : 30,727.35 = 15,485.09 : x
  2. Step 2: Convert to fraction form
    20,506.50/30,727.35 = 15,485.09/x
  3. Step 3: Cross multiply
    20,506.50x = 30,727.35 × 15,485.09
  4. Step 4: Simplify right side
    20,506.50x = 475,815,626.57
  5. Step 5: Solve for x
    x = 475,815,626.57/20,506.50
  6. Step 6: Final answer
    x = 23,203.16

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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.