Home / 19,670.16-27,145.36-11,172.96

Finding the Fourth Proportional to 19,670.16, 27,145.36 and 11,172.96

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Solution

The fourth proportional to 19,670.16, 27,145.36 and 11,172.96 is: 15,418.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.16 : 27,145.36 = 11,172.96 : x
  2. Step 2: Convert to fraction form
    19,670.16/27,145.36 = 11,172.96/x
  3. Step 3: Cross multiply
    19,670.16x = 27,145.36 × 11,172.96
  4. Step 4: Simplify right side
    19,670.16x = 303,294,021.47
  5. Step 5: Solve for x
    x = 303,294,021.47/19,670.16
  6. Step 6: Final answer
    x = 15,418.99

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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.