Home / 20,072.74-27,699.99-11,120.23

Finding the Fourth Proportional to 20,072.74, 27,699.99 and 11,120.23

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Solution

The fourth proportional to 20,072.74, 27,699.99 and 11,120.23 is: 15,345.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.74 : 27,699.99 = 11,120.23 : x
  2. Step 2: Convert to fraction form
    20,072.74/27,699.99 = 11,120.23/x
  3. Step 3: Cross multiply
    20,072.74x = 27,699.99 × 11,120.23
  4. Step 4: Simplify right side
    20,072.74x = 308,030,259.80
  5. Step 5: Solve for x
    x = 308,030,259.80/20,072.74
  6. Step 6: Final answer
    x = 15,345.70

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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.