Home / 28,876.28-43,317.25-12,005.80

Finding the Fourth Proportional to 28,876.28, 43,317.25 and 12,005.80

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Solution

The fourth proportional to 28,876.28, 43,317.25 and 12,005.80 is: 18,009.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,876.28 : 43,317.25 = 12,005.80 : x
  2. Step 2: Convert to fraction form
    28,876.28/43,317.25 = 12,005.80/x
  3. Step 3: Cross multiply
    28,876.28x = 43,317.25 × 12,005.80
  4. Step 4: Simplify right side
    28,876.28x = 520,058,240.05
  5. Step 5: Solve for x
    x = 520,058,240.05/28,876.28
  6. Step 6: Final answer
    x = 18,009.88

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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.