Home / 20,531.61-30,783.60-11,163.69

Finding the Fourth Proportional to 20,531.61, 30,783.60 and 11,163.69

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Solution

The fourth proportional to 20,531.61, 30,783.60 and 11,163.69 is: 16,738.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.61 : 30,783.60 = 11,163.69 : x
  2. Step 2: Convert to fraction form
    20,531.61/30,783.60 = 11,163.69/x
  3. Step 3: Cross multiply
    20,531.61x = 30,783.60 × 11,163.69
  4. Step 4: Simplify right side
    20,531.61x = 343,658,567.48
  5. Step 5: Solve for x
    x = 343,658,567.48/20,531.61
  6. Step 6: Final answer
    x = 16,738.02

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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.