Home / 18,982.08-28,470.96-5,130

Finding the Fourth Proportional to 18,982.08, 28,470.96 and 5,130

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Solution

The fourth proportional to 18,982.08, 28,470.96 and 5,130 is: 7,694.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,982.08 : 28,470.96 = 5,130 : x
  2. Step 2: Convert to fraction form
    18,982.08/28,470.96 = 5,130/x
  3. Step 3: Cross multiply
    18,982.08x = 28,470.96 × 5,130
  4. Step 4: Simplify right side
    18,982.08x = 146,056,024.80
  5. Step 5: Solve for x
    x = 146,056,024.80/18,982.08
  6. Step 6: Final answer
    x = 7,694.42

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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.