Home / 12,106.62-18,159.66-7,948.38

Finding the Fourth Proportional to 12,106.62, 18,159.66 and 7,948.38

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Solution

The fourth proportional to 12,106.62, 18,159.66 and 7,948.38 is: 11,922.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.62 : 18,159.66 = 7,948.38 : x
  2. Step 2: Convert to fraction form
    12,106.62/18,159.66 = 7,948.38/x
  3. Step 3: Cross multiply
    12,106.62x = 18,159.66 × 7,948.38
  4. Step 4: Simplify right side
    12,106.62x = 144,339,878.35
  5. Step 5: Solve for x
    x = 144,339,878.35/12,106.62
  6. Step 6: Final answer
    x = 11,922.39

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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.