Home / 20,655.05-28,504.07-11,704.30

Finding the Fourth Proportional to 20,655.05, 28,504.07 and 11,704.30

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Solution

The fourth proportional to 20,655.05, 28,504.07 and 11,704.30 is: 16,151.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.05 : 28,504.07 = 11,704.30 : x
  2. Step 2: Convert to fraction form
    20,655.05/28,504.07 = 11,704.30/x
  3. Step 3: Cross multiply
    20,655.05x = 28,504.07 × 11,704.30
  4. Step 4: Simplify right side
    20,655.05x = 333,620,056.72
  5. Step 5: Solve for x
    x = 333,620,056.72/20,655.05
  6. Step 6: Final answer
    x = 16,151.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.