Home / 11,815.09-17,725.70-4,420.12

Finding the Fourth Proportional to 11,815.09, 17,725.70 and 4,420.12

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Solution

The fourth proportional to 11,815.09, 17,725.70 and 4,420.12 is: 6,631.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.09 : 17,725.70 = 4,420.12 : x
  2. Step 2: Convert to fraction form
    11,815.09/17,725.70 = 4,420.12/x
  3. Step 3: Cross multiply
    11,815.09x = 17,725.70 × 4,420.12
  4. Step 4: Simplify right side
    11,815.09x = 78,349,721.08
  5. Step 5: Solve for x
    x = 78,349,721.08/11,815.09
  6. Step 6: Final answer
    x = 6,631.33

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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.