Home / 8,855.21-13,178.27-8,559.92

Finding the Fourth Proportional to 8,855.21, 13,178.27 and 8,559.92

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Solution

The fourth proportional to 8,855.21, 13,178.27 and 8,559.92 is: 12,738.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.21 : 13,178.27 = 8,559.92 : x
  2. Step 2: Convert to fraction form
    8,855.21/13,178.27 = 8,559.92/x
  3. Step 3: Cross multiply
    8,855.21x = 13,178.27 × 8,559.92
  4. Step 4: Simplify right side
    8,855.21x = 112,804,860.35
  5. Step 5: Solve for x
    x = 112,804,860.35/8,855.21
  6. Step 6: Final answer
    x = 12,738.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.