Home / 28,761.08-43,133.72-18,215.28

Finding the Fourth Proportional to 28,761.08, 43,133.72 and 18,215.28

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Solution

The fourth proportional to 28,761.08, 43,133.72 and 18,215.28 is: 27,317.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,761.08 : 43,133.72 = 18,215.28 : x
  2. Step 2: Convert to fraction form
    28,761.08/43,133.72 = 18,215.28/x
  3. Step 3: Cross multiply
    28,761.08x = 43,133.72 × 18,215.28
  4. Step 4: Simplify right side
    28,761.08x = 785,692,696.17
  5. Step 5: Solve for x
    x = 785,692,696.17/28,761.08
  6. Step 6: Final answer
    x = 27,317.92

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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.