Home / 31,277.85-43,163.99-17,129.78

Finding the Fourth Proportional to 31,277.85, 43,163.99 and 17,129.78

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Solution

The fourth proportional to 31,277.85, 43,163.99 and 17,129.78 is: 23,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,277.85 : 43,163.99 = 17,129.78 : x
  2. Step 2: Convert to fraction form
    31,277.85/43,163.99 = 17,129.78/x
  3. Step 3: Cross multiply
    31,277.85x = 43,163.99 × 17,129.78
  4. Step 4: Simplify right side
    31,277.85x = 739,389,577.25
  5. Step 5: Solve for x
    x = 739,389,577.25/31,277.85
  6. Step 6: Final answer
    x = 23,639.40

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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.