Home / 19,670.53-27,145.90-11,172.93

Finding the Fourth Proportional to 19,670.53, 27,145.90 and 11,172.93

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Solution

The fourth proportional to 19,670.53, 27,145.90 and 11,172.93 is: 15,418.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.53 : 27,145.90 = 11,172.93 : x
  2. Step 2: Convert to fraction form
    19,670.53/27,145.90 = 11,172.93/x
  3. Step 3: Cross multiply
    19,670.53x = 27,145.90 × 11,172.93
  4. Step 4: Simplify right side
    19,670.53x = 303,299,240.49
  5. Step 5: Solve for x
    x = 303,299,240.49/19,670.53
  6. Step 6: Final answer
    x = 15,418.97

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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.