Home / 20,321.46-28,043.06-11,369.34

Finding the Fourth Proportional to 20,321.46, 28,043.06 and 11,369.34

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Solution

The fourth proportional to 20,321.46, 28,043.06 and 11,369.34 is: 15,689.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.46 : 28,043.06 = 11,369.34 : x
  2. Step 2: Convert to fraction form
    20,321.46/28,043.06 = 11,369.34/x
  3. Step 3: Cross multiply
    20,321.46x = 28,043.06 × 11,369.34
  4. Step 4: Simplify right side
    20,321.46x = 318,831,083.78
  5. Step 5: Solve for x
    x = 318,831,083.78/20,321.46
  6. Step 6: Final answer
    x = 15,689.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.