Home / 20,636.08-30,954.06-7,488.40

Finding the Fourth Proportional to 20,636.08, 30,954.06 and 7,488.40

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Solution

The fourth proportional to 20,636.08, 30,954.06 and 7,488.40 is: 11,232.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.08 : 30,954.06 = 7,488.40 : x
  2. Step 2: Convert to fraction form
    20,636.08/30,954.06 = 7,488.40/x
  3. Step 3: Cross multiply
    20,636.08x = 30,954.06 × 7,488.40
  4. Step 4: Simplify right side
    20,636.08x = 231,796,382.90
  5. Step 5: Solve for x
    x = 231,796,382.90/20,636.08
  6. Step 6: Final answer
    x = 11,232.58

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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.