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Finding the Fourth Proportional to 28,231.30, 39,611.30 and 28,231.30

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Solution

The fourth proportional to 28,231.30, 39,611.30 and 28,231.30 is: 39,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.30 : 39,611.30 = 28,231.30 : x
  2. Step 2: Convert to fraction form
    28,231.30/39,611.30 = 28,231.30/x
  3. Step 3: Cross multiply
    28,231.30x = 39,611.30 × 28,231.30
  4. Step 4: Simplify right side
    28,231.30x = 1,118,278,493.69
  5. Step 5: Solve for x
    x = 1,118,278,493.69/28,231.30
  6. Step 6: Final answer
    x = 39,611.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.