Home / 28,636.80-42,971.93-11,995.41

Finding the Fourth Proportional to 28,636.80, 42,971.93 and 11,995.41

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Solution

The fourth proportional to 28,636.80, 42,971.93 and 11,995.41 is: 18,000.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.80 : 42,971.93 = 11,995.41 : x
  2. Step 2: Convert to fraction form
    28,636.80/42,971.93 = 11,995.41/x
  3. Step 3: Cross multiply
    28,636.80x = 42,971.93 × 11,995.41
  4. Step 4: Simplify right side
    28,636.80x = 515,465,918.84
  5. Step 5: Solve for x
    x = 515,465,918.84/28,636.80
  6. Step 6: Final answer
    x = 18,000.12

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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.