Home / 19,168.82-28,751.06-5,130.32

Finding the Fourth Proportional to 19,168.82, 28,751.06 and 5,130.32

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Solution

The fourth proportional to 19,168.82, 28,751.06 and 5,130.32 is: 7,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.82 : 28,751.06 = 5,130.32 : x
  2. Step 2: Convert to fraction form
    19,168.82/28,751.06 = 5,130.32/x
  3. Step 3: Cross multiply
    19,168.82x = 28,751.06 × 5,130.32
  4. Step 4: Simplify right side
    19,168.82x = 147,502,138.14
  5. Step 5: Solve for x
    x = 147,502,138.14/19,168.82
  6. Step 6: Final answer
    x = 7,694.90

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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.