Home / 19,739.16-27,239.40-10,786.80

Finding the Fourth Proportional to 19,739.16, 27,239.40 and 10,786.80

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Solution

The fourth proportional to 19,739.16, 27,239.40 and 10,786.80 is: 14,885.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,739.16 : 27,239.40 = 10,786.80 : x
  2. Step 2: Convert to fraction form
    19,739.16/27,239.40 = 10,786.80/x
  3. Step 3: Cross multiply
    19,739.16x = 27,239.40 × 10,786.80
  4. Step 4: Simplify right side
    19,739.16x = 293,825,959.92
  5. Step 5: Solve for x
    x = 293,825,959.92/19,739.16
  6. Step 6: Final answer
    x = 14,885.43

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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.