Home / 31,166.88-43,013.40-18,591.63

Finding the Fourth Proportional to 31,166.88, 43,013.40 and 18,591.63

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Solution

The fourth proportional to 31,166.88, 43,013.40 and 18,591.63 is: 25,658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,166.88 : 43,013.40 = 18,591.63 : x
  2. Step 2: Convert to fraction form
    31,166.88/43,013.40 = 18,591.63/x
  3. Step 3: Cross multiply
    31,166.88x = 43,013.40 × 18,591.63
  4. Step 4: Simplify right side
    31,166.88x = 799,689,217.84
  5. Step 5: Solve for x
    x = 799,689,217.84/31,166.88
  6. Step 6: Final answer
    x = 25,658.30

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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.