Home / 28,728.19-43,080.49-10,965.32

Finding the Fourth Proportional to 28,728.19, 43,080.49 and 10,965.32

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Solution

The fourth proportional to 28,728.19, 43,080.49 and 10,965.32 is: 16,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.19 : 43,080.49 = 10,965.32 : x
  2. Step 2: Convert to fraction form
    28,728.19/43,080.49 = 10,965.32/x
  3. Step 3: Cross multiply
    28,728.19x = 43,080.49 × 10,965.32
  4. Step 4: Simplify right side
    28,728.19x = 472,391,358.61
  5. Step 5: Solve for x
    x = 472,391,358.61/28,728.19
  6. Step 6: Final answer
    x = 16,443.48

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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.