Home / 12,389.82-18,585.15-4,488.36

Finding the Fourth Proportional to 12,389.82, 18,585.15 and 4,488.36

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Solution

The fourth proportional to 12,389.82, 18,585.15 and 4,488.36 is: 6,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.82 : 18,585.15 = 4,488.36 : x
  2. Step 2: Convert to fraction form
    12,389.82/18,585.15 = 4,488.36/x
  3. Step 3: Cross multiply
    12,389.82x = 18,585.15 × 4,488.36
  4. Step 4: Simplify right side
    12,389.82x = 83,416,843.85
  5. Step 5: Solve for x
    x = 83,416,843.85/12,389.82
  6. Step 6: Final answer
    x = 6,732.69

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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.