Home / 43,718.88-65,563.68-14,128.72

Finding the Fourth Proportional to 43,718.88, 65,563.68 and 14,128.72

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Solution

The fourth proportional to 43,718.88, 65,563.68 and 14,128.72 is: 21,188.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,718.88 : 65,563.68 = 14,128.72 : x
  2. Step 2: Convert to fraction form
    43,718.88/65,563.68 = 14,128.72/x
  3. Step 3: Cross multiply
    43,718.88x = 65,563.68 × 14,128.72
  4. Step 4: Simplify right side
    43,718.88x = 926,330,876.89
  5. Step 5: Solve for x
    x = 926,330,876.89/43,718.88
  6. Step 6: Final answer
    x = 21,188.35

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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.