Home / 12,182.40-16,811.84-7,146.80

Finding the Fourth Proportional to 12,182.40, 16,811.84 and 7,146.80

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Solution

The fourth proportional to 12,182.40, 16,811.84 and 7,146.80 is: 9,862.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,182.40 : 16,811.84 = 7,146.80 : x
  2. Step 2: Convert to fraction form
    12,182.40/16,811.84 = 7,146.80/x
  3. Step 3: Cross multiply
    12,182.40x = 16,811.84 × 7,146.80
  4. Step 4: Simplify right side
    12,182.40x = 120,150,858.11
  5. Step 5: Solve for x
    x = 120,150,858.11/12,182.40
  6. Step 6: Final answer
    x = 9,862.66

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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.