Home / 20,072.50-27,699.43-11,119.80

Finding the Fourth Proportional to 20,072.50, 27,699.43 and 11,119.80

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Solution

The fourth proportional to 20,072.50, 27,699.43 and 11,119.80 is: 15,344.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.50 : 27,699.43 = 11,119.80 : x
  2. Step 2: Convert to fraction form
    20,072.50/27,699.43 = 11,119.80/x
  3. Step 3: Cross multiply
    20,072.50x = 27,699.43 × 11,119.80
  4. Step 4: Simplify right side
    20,072.50x = 308,012,121.71
  5. Step 5: Solve for x
    x = 308,012,121.71/20,072.50
  6. Step 6: Final answer
    x = 15,344.98

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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.