Home / 28,712.85-43,069.30-10,939.38

Finding the Fourth Proportional to 28,712.85, 43,069.30 and 10,939.38

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Solution

The fourth proportional to 28,712.85, 43,069.30 and 10,939.38 is: 16,409.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.85 : 43,069.30 = 10,939.38 : x
  2. Step 2: Convert to fraction form
    28,712.85/43,069.30 = 10,939.38/x
  3. Step 3: Cross multiply
    28,712.85x = 43,069.30 × 10,939.38
  4. Step 4: Simplify right side
    28,712.85x = 471,151,439.03
  5. Step 5: Solve for x
    x = 471,151,439.03/28,712.85
  6. Step 6: Final answer
    x = 16,409.08

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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.