Home / 20,383.05-30,506.53-11,615.61

Finding the Fourth Proportional to 20,383.05, 30,506.53 and 11,615.61

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Solution

The fourth proportional to 20,383.05, 30,506.53 and 11,615.61 is: 17,384.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.05 : 30,506.53 = 11,615.61 : x
  2. Step 2: Convert to fraction form
    20,383.05/30,506.53 = 11,615.61/x
  3. Step 3: Cross multiply
    20,383.05x = 30,506.53 × 11,615.61
  4. Step 4: Simplify right side
    20,383.05x = 354,351,954.93
  5. Step 5: Solve for x
    x = 354,351,954.93/20,383.05
  6. Step 6: Final answer
    x = 17,384.64

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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.