Home / 20,172.99-27,839.07-11,098.74

Finding the Fourth Proportional to 20,172.99, 27,839.07 and 11,098.74

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Solution

The fourth proportional to 20,172.99, 27,839.07 and 11,098.74 is: 15,316.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.99 : 27,839.07 = 11,098.74 : x
  2. Step 2: Convert to fraction form
    20,172.99/27,839.07 = 11,098.74/x
  3. Step 3: Cross multiply
    20,172.99x = 27,839.07 × 11,098.74
  4. Step 4: Simplify right side
    20,172.99x = 308,978,599.77
  5. Step 5: Solve for x
    x = 308,978,599.77/20,172.99
  6. Step 6: Final answer
    x = 15,316.45

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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.