Home / 19,786.20-27,308.18-11,407.56

Finding the Fourth Proportional to 19,786.20, 27,308.18 and 11,407.56

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Solution

The fourth proportional to 19,786.20, 27,308.18 and 11,407.56 is: 15,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.20 : 27,308.18 = 11,407.56 : x
  2. Step 2: Convert to fraction form
    19,786.20/27,308.18 = 11,407.56/x
  3. Step 3: Cross multiply
    19,786.20x = 27,308.18 × 11,407.56
  4. Step 4: Simplify right side
    19,786.20x = 311,519,701.84
  5. Step 5: Solve for x
    x = 311,519,701.84/19,786.20
  6. Step 6: Final answer
    x = 15,744.29

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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.