Home / 20,205.81-30,289.28-10,349.73

Finding the Fourth Proportional to 20,205.81, 30,289.28 and 10,349.73

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Solution

The fourth proportional to 20,205.81, 30,289.28 and 10,349.73 is: 15,514.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.81 : 30,289.28 = 10,349.73 : x
  2. Step 2: Convert to fraction form
    20,205.81/30,289.28 = 10,349.73/x
  3. Step 3: Cross multiply
    20,205.81x = 30,289.28 × 10,349.73
  4. Step 4: Simplify right side
    20,205.81x = 313,485,818.15
  5. Step 5: Solve for x
    x = 313,485,818.15/20,205.81
  6. Step 6: Final answer
    x = 15,514.64

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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.