Home / 12,801.70-17,666.67-7,137.37

Finding the Fourth Proportional to 12,801.70, 17,666.67 and 7,137.37

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Solution

The fourth proportional to 12,801.70, 17,666.67 and 7,137.37 is: 9,849.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,801.70 : 17,666.67 = 7,137.37 : x
  2. Step 2: Convert to fraction form
    12,801.70/17,666.67 = 7,137.37/x
  3. Step 3: Cross multiply
    12,801.70x = 17,666.67 × 7,137.37
  4. Step 4: Simplify right side
    12,801.70x = 126,093,560.46
  5. Step 5: Solve for x
    x = 126,093,560.46/12,801.70
  6. Step 6: Final answer
    x = 9,849.75

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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.