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Finding the Fourth Proportional to 43,431.75, 65,147.76 and 10,599.75

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Solution

The fourth proportional to 43,431.75, 65,147.76 and 10,599.75 is: 15,899.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,431.75 : 65,147.76 = 10,599.75 : x
  2. Step 2: Convert to fraction form
    43,431.75/65,147.76 = 10,599.75/x
  3. Step 3: Cross multiply
    43,431.75x = 65,147.76 × 10,599.75
  4. Step 4: Simplify right side
    43,431.75x = 690,549,969.06
  5. Step 5: Solve for x
    x = 690,549,969.06/43,431.75
  6. Step 6: Final answer
    x = 15,899.66

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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.