Home / 14,261.20-21,391.80-12,851.80

Finding the Fourth Proportional to 14,261.20, 21,391.80 and 12,851.80

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Solution

The fourth proportional to 14,261.20, 21,391.80 and 12,851.80 is: 19,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,261.20 : 21,391.80 = 12,851.80 : x
  2. Step 2: Convert to fraction form
    14,261.20/21,391.80 = 12,851.80/x
  3. Step 3: Cross multiply
    14,261.20x = 21,391.80 × 12,851.80
  4. Step 4: Simplify right side
    14,261.20x = 274,923,135.24
  5. Step 5: Solve for x
    x = 274,923,135.24/14,261.20
  6. Step 6: Final answer
    x = 19,277.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.