Home / 12,117.66-16,789.85-11,855.22

Finding the Fourth Proportional to 12,117.66, 16,789.85 and 11,855.22

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Solution

The fourth proportional to 12,117.66, 16,789.85 and 11,855.22 is: 16,426.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.66 : 16,789.85 = 11,855.22 : x
  2. Step 2: Convert to fraction form
    12,117.66/16,789.85 = 11,855.22/x
  3. Step 3: Cross multiply
    12,117.66x = 16,789.85 × 11,855.22
  4. Step 4: Simplify right side
    12,117.66x = 199,047,306.24
  5. Step 5: Solve for x
    x = 199,047,306.24/12,117.66
  6. Step 6: Final answer
    x = 16,426.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.