Home / 21,435.32-32,140.92-8,941.88

Finding the Fourth Proportional to 21,435.32, 32,140.92 and 8,941.88

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Solution

The fourth proportional to 21,435.32, 32,140.92 and 8,941.88 is: 13,407.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.32 : 32,140.92 = 8,941.88 : x
  2. Step 2: Convert to fraction form
    21,435.32/32,140.92 = 8,941.88/x
  3. Step 3: Cross multiply
    21,435.32x = 32,140.92 × 8,941.88
  4. Step 4: Simplify right side
    21,435.32x = 287,400,249.73
  5. Step 5: Solve for x
    x = 287,400,249.73/21,435.32
  6. Step 6: Final answer
    x = 13,407.79

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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.