Home / 28,433.24-42,649.50-12,839.96

Finding the Fourth Proportional to 28,433.24, 42,649.50 and 12,839.96

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Solution

The fourth proportional to 28,433.24, 42,649.50 and 12,839.96 is: 19,259.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.24 : 42,649.50 = 12,839.96 : x
  2. Step 2: Convert to fraction form
    28,433.24/42,649.50 = 12,839.96/x
  3. Step 3: Cross multiply
    28,433.24x = 42,649.50 × 12,839.96
  4. Step 4: Simplify right side
    28,433.24x = 547,617,874.02
  5. Step 5: Solve for x
    x = 547,617,874.02/28,433.24
  6. Step 6: Final answer
    x = 19,259.78

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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.