Home / 43,872.72-65,809.08-20,515.56

Finding the Fourth Proportional to 43,872.72, 65,809.08 and 20,515.56

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Solution

The fourth proportional to 43,872.72, 65,809.08 and 20,515.56 is: 30,773.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,872.72 : 65,809.08 = 20,515.56 : x
  2. Step 2: Convert to fraction form
    43,872.72/65,809.08 = 20,515.56/x
  3. Step 3: Cross multiply
    43,872.72x = 65,809.08 × 20,515.56
  4. Step 4: Simplify right side
    43,872.72x = 1,350,110,129.28
  5. Step 5: Solve for x
    x = 1,350,110,129.28/43,872.72
  6. Step 6: Final answer
    x = 30,773.34

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1.5x scale

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.