Home / 12,137.85-16,730.55-9,480.65

Finding the Fourth Proportional to 12,137.85, 16,730.55 and 9,480.65

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Solution

The fourth proportional to 12,137.85, 16,730.55 and 9,480.65 is: 13,067.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.85 : 16,730.55 = 9,480.65 : x
  2. Step 2: Convert to fraction form
    12,137.85/16,730.55 = 9,480.65/x
  3. Step 3: Cross multiply
    12,137.85x = 16,730.55 × 9,480.65
  4. Step 4: Simplify right side
    12,137.85x = 158,616,405.20
  5. Step 5: Solve for x
    x = 158,616,405.20/12,137.85
  6. Step 6: Final answer
    x = 13,067.92

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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.