Home / 28,408.66-39,205.29-15,833.50

Finding the Fourth Proportional to 28,408.66, 39,205.29 and 15,833.50

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Solution

The fourth proportional to 28,408.66, 39,205.29 and 15,833.50 is: 21,850.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.66 : 39,205.29 = 15,833.50 : x
  2. Step 2: Convert to fraction form
    28,408.66/39,205.29 = 15,833.50/x
  3. Step 3: Cross multiply
    28,408.66x = 39,205.29 × 15,833.50
  4. Step 4: Simplify right side
    28,408.66x = 620,756,959.22
  5. Step 5: Solve for x
    x = 620,756,959.22/28,408.66
  6. Step 6: Final answer
    x = 21,850.98

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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.