Home / 31,277.40-43,163.60-17,130.20

Finding the Fourth Proportional to 31,277.40, 43,163.60 and 17,130.20

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Solution

The fourth proportional to 31,277.40, 43,163.60 and 17,130.20 is: 23,640.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,277.40 : 43,163.60 = 17,130.20 : x
  2. Step 2: Convert to fraction form
    31,277.40/43,163.60 = 17,130.20/x
  3. Step 3: Cross multiply
    31,277.40x = 43,163.60 × 17,130.20
  4. Step 4: Simplify right side
    31,277.40x = 739,401,100.72
  5. Step 5: Solve for x
    x = 739,401,100.72/31,277.40
  6. Step 6: Final answer
    x = 23,640.11

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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.