Home / 19,679.36-27,147.28-12,496.99

Finding the Fourth Proportional to 19,679.36, 27,147.28 and 12,496.99

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Solution

The fourth proportional to 19,679.36, 27,147.28 and 12,496.99 is: 17,239.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.36 : 27,147.28 = 12,496.99 : x
  2. Step 2: Convert to fraction form
    19,679.36/27,147.28 = 12,496.99/x
  3. Step 3: Cross multiply
    19,679.36x = 27,147.28 × 12,496.99
  4. Step 4: Simplify right side
    19,679.36x = 339,259,088.47
  5. Step 5: Solve for x
    x = 339,259,088.47/19,679.36
  6. Step 6: Final answer
    x = 17,239.34

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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.