Home / 21,672.08-29,907.46-13,176.96

Finding the Fourth Proportional to 21,672.08, 29,907.46 and 13,176.96

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Solution

The fourth proportional to 21,672.08, 29,907.46 and 13,176.96 is: 18,184.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.08 : 29,907.46 = 13,176.96 : x
  2. Step 2: Convert to fraction form
    21,672.08/29,907.46 = 13,176.96/x
  3. Step 3: Cross multiply
    21,672.08x = 29,907.46 × 13,176.96
  4. Step 4: Simplify right side
    21,672.08x = 394,089,404.12
  5. Step 5: Solve for x
    x = 394,089,404.12/21,672.08
  6. Step 6: Final answer
    x = 18,184.20

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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.