Home / 20,859.66-28,783.89-12,361.95

Finding the Fourth Proportional to 20,859.66, 28,783.89 and 12,361.95

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Solution

The fourth proportional to 20,859.66, 28,783.89 and 12,361.95 is: 17,058.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.66 : 28,783.89 = 12,361.95 : x
  2. Step 2: Convert to fraction form
    20,859.66/28,783.89 = 12,361.95/x
  3. Step 3: Cross multiply
    20,859.66x = 28,783.89 × 12,361.95
  4. Step 4: Simplify right side
    20,859.66x = 355,825,008.99
  5. Step 5: Solve for x
    x = 355,825,008.99/20,859.66
  6. Step 6: Final answer
    x = 17,058.04

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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.