Home / 28,876.77-43,321.64-9,156.51

Finding the Fourth Proportional to 28,876.77, 43,321.64 and 9,156.51

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Solution

The fourth proportional to 28,876.77, 43,321.64 and 9,156.51 is: 13,736.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,876.77 : 43,321.64 = 9,156.51 : x
  2. Step 2: Convert to fraction form
    28,876.77/43,321.64 = 9,156.51/x
  3. Step 3: Cross multiply
    28,876.77x = 43,321.64 × 9,156.51
  4. Step 4: Simplify right side
    28,876.77x = 396,674,984.09
  5. Step 5: Solve for x
    x = 396,674,984.09/28,876.77
  6. Step 6: Final answer
    x = 13,736.82

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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.