Home / 13,328.64-19,982.15-5,543.28

Finding the Fourth Proportional to 13,328.64, 19,982.15 and 5,543.28

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Solution

The fourth proportional to 13,328.64, 19,982.15 and 5,543.28 is: 8,310.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.64 : 19,982.15 = 5,543.28 : x
  2. Step 2: Convert to fraction form
    13,328.64/19,982.15 = 5,543.28/x
  3. Step 3: Cross multiply
    13,328.64x = 19,982.15 × 5,543.28
  4. Step 4: Simplify right side
    13,328.64x = 110,766,652.45
  5. Step 5: Solve for x
    x = 110,766,652.45/13,328.64
  6. Step 6: Final answer
    x = 8,310.42

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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.