Home / 18,758.32-28,137.52-7,665.00

Finding the Fourth Proportional to 18,758.32, 28,137.52 and 7,665.00

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Solution

The fourth proportional to 18,758.32, 28,137.52 and 7,665.00 is: 11,497.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.32 : 28,137.52 = 7,665.00 : x
  2. Step 2: Convert to fraction form
    18,758.32/28,137.52 = 7,665.00/x
  3. Step 3: Cross multiply
    18,758.32x = 28,137.52 × 7,665.00
  4. Step 4: Simplify right side
    18,758.32x = 215,674,161.14
  5. Step 5: Solve for x
    x = 215,674,161.14/18,758.32
  6. Step 6: Final answer
    x = 11,497.52

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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.