Home / 28,489.29-42,749.24-11,860.80

Finding the Fourth Proportional to 28,489.29, 42,749.24 and 11,860.80

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Solution

The fourth proportional to 28,489.29, 42,749.24 and 11,860.80 is: 17,797.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.29 : 42,749.24 = 11,860.80 : x
  2. Step 2: Convert to fraction form
    28,489.29/42,749.24 = 11,860.80/x
  3. Step 3: Cross multiply
    28,489.29x = 42,749.24 × 11,860.80
  4. Step 4: Simplify right side
    28,489.29x = 507,040,126.49
  5. Step 5: Solve for x
    x = 507,040,126.49/28,489.29
  6. Step 6: Final answer
    x = 17,797.57

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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.