Home / 28,765.87-43,134.09-13,170.13

Finding the Fourth Proportional to 28,765.87, 43,134.09 and 13,170.13

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Solution

The fourth proportional to 28,765.87, 43,134.09 and 13,170.13 is: 19,748.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,765.87 : 43,134.09 = 13,170.13 : x
  2. Step 2: Convert to fraction form
    28,765.87/43,134.09 = 13,170.13/x
  3. Step 3: Cross multiply
    28,765.87x = 43,134.09 × 13,170.13
  4. Step 4: Simplify right side
    28,765.87x = 568,081,572.73
  5. Step 5: Solve for x
    x = 568,081,572.73/28,765.87
  6. Step 6: Final answer
    x = 19,748.46

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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.