Home / 13,650.40-20,471.60-5,328.52

Finding the Fourth Proportional to 13,650.40, 20,471.60 and 5,328.52

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Solution

The fourth proportional to 13,650.40, 20,471.60 and 5,328.52 is: 7,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,650.40 : 20,471.60 = 5,328.52 : x
  2. Step 2: Convert to fraction form
    13,650.40/20,471.60 = 5,328.52/x
  3. Step 3: Cross multiply
    13,650.40x = 20,471.60 × 5,328.52
  4. Step 4: Simplify right side
    13,650.40x = 109,083,330.03
  5. Step 5: Solve for x
    x = 109,083,330.03/13,650.40
  6. Step 6: Final answer
    x = 7,991.22

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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.