Home / 19,860.66-27,408.20-10,786.42

Finding the Fourth Proportional to 19,860.66, 27,408.20 and 10,786.42

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Solution

The fourth proportional to 19,860.66, 27,408.20 and 10,786.42 is: 14,885.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.66 : 27,408.20 = 10,786.42 : x
  2. Step 2: Convert to fraction form
    19,860.66/27,408.20 = 10,786.42/x
  3. Step 3: Cross multiply
    19,860.66x = 27,408.20 × 10,786.42
  4. Step 4: Simplify right side
    19,860.66x = 295,636,356.64
  5. Step 5: Solve for x
    x = 295,636,356.64/19,860.66
  6. Step 6: Final answer
    x = 14,885.53

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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.