Home / 19,860.70-27,407.87-10,786.09

Finding the Fourth Proportional to 19,860.70, 27,407.87 and 10,786.09

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Solution

The fourth proportional to 19,860.70, 27,407.87 and 10,786.09 is: 14,884.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.70 : 27,407.87 = 10,786.09 : x
  2. Step 2: Convert to fraction form
    19,860.70/27,407.87 = 10,786.09/x
  3. Step 3: Cross multiply
    19,860.70x = 27,407.87 × 10,786.09
  4. Step 4: Simplify right side
    19,860.70x = 295,623,752.53
  5. Step 5: Solve for x
    x = 295,623,752.53/19,860.70
  6. Step 6: Final answer
    x = 14,884.86

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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.