Home / 13,650.30-20,471.32-5,328.06

Finding the Fourth Proportional to 13,650.30, 20,471.32 and 5,328.06

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Solution

The fourth proportional to 13,650.30, 20,471.32 and 5,328.06 is: 7,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,650.30 : 20,471.32 = 5,328.06 : x
  2. Step 2: Convert to fraction form
    13,650.30/20,471.32 = 5,328.06/x
  3. Step 3: Cross multiply
    13,650.30x = 20,471.32 × 5,328.06
  4. Step 4: Simplify right side
    13,650.30x = 109,072,421.24
  5. Step 5: Solve for x
    x = 109,072,421.24/13,650.30
  6. Step 6: Final answer
    x = 7,990.48

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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.