Home / 28,712.76-43,043.59-11,178.51

Finding the Fourth Proportional to 28,712.76, 43,043.59 and 11,178.51

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Solution

The fourth proportional to 28,712.76, 43,043.59 and 11,178.51 is: 16,757.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.76 : 43,043.59 = 11,178.51 : x
  2. Step 2: Convert to fraction form
    28,712.76/43,043.59 = 11,178.51/x
  3. Step 3: Cross multiply
    28,712.76x = 43,043.59 × 11,178.51
  4. Step 4: Simplify right side
    28,712.76x = 481,163,201.25
  5. Step 5: Solve for x
    x = 481,163,201.25/28,712.76
  6. Step 6: Final answer
    x = 16,757.82

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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.