Home / 20,751.88-28,636.98-11,800.36

Finding the Fourth Proportional to 20,751.88, 28,636.98 and 11,800.36

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Solution

The fourth proportional to 20,751.88, 28,636.98 and 11,800.36 is: 16,284.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.88 : 28,636.98 = 11,800.36 : x
  2. Step 2: Convert to fraction form
    20,751.88/28,636.98 = 11,800.36/x
  3. Step 3: Cross multiply
    20,751.88x = 28,636.98 × 11,800.36
  4. Step 4: Simplify right side
    20,751.88x = 337,926,673.31
  5. Step 5: Solve for x
    x = 337,926,673.31/20,751.88
  6. Step 6: Final answer
    x = 16,284.15

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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.