Home / 19,328.10-28,989.45-6,181.80

Finding the Fourth Proportional to 19,328.10, 28,989.45 and 6,181.80

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Solution

The fourth proportional to 19,328.10, 28,989.45 and 6,181.80 is: 9,271.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328.10 : 28,989.45 = 6,181.80 : x
  2. Step 2: Convert to fraction form
    19,328.10/28,989.45 = 6,181.80/x
  3. Step 3: Cross multiply
    19,328.10x = 28,989.45 × 6,181.80
  4. Step 4: Simplify right side
    19,328.10x = 179,206,982.01
  5. Step 5: Solve for x
    x = 179,206,982.01/19,328.10
  6. Step 6: Final answer
    x = 9,271.84

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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.