Home / 28,176.70-42,273.52-11,309.66

Finding the Fourth Proportional to 28,176.70, 42,273.52 and 11,309.66

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Solution

The fourth proportional to 28,176.70, 42,273.52 and 11,309.66 is: 16,967.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.70 : 42,273.52 = 11,309.66 : x
  2. Step 2: Convert to fraction form
    28,176.70/42,273.52 = 11,309.66/x
  3. Step 3: Cross multiply
    28,176.70x = 42,273.52 × 11,309.66
  4. Step 4: Simplify right side
    28,176.70x = 478,099,138.20
  5. Step 5: Solve for x
    x = 478,099,138.20/28,176.70
  6. Step 6: Final answer
    x = 16,967.89

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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.