Home / 19,711.36-27,190.92-12,629.80

Finding the Fourth Proportional to 19,711.36, 27,190.92 and 12,629.80

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Solution

The fourth proportional to 19,711.36, 27,190.92 and 12,629.80 is: 17,422.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,711.36 : 27,190.92 = 12,629.80 : x
  2. Step 2: Convert to fraction form
    19,711.36/27,190.92 = 12,629.80/x
  3. Step 3: Cross multiply
    19,711.36x = 27,190.92 × 12,629.80
  4. Step 4: Simplify right side
    19,711.36x = 343,415,881.42
  5. Step 5: Solve for x
    x = 343,415,881.42/19,711.36
  6. Step 6: Final answer
    x = 17,422.23

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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.