Home / 28,921.06-43,382.40-9,200.80

Finding the Fourth Proportional to 28,921.06, 43,382.40 and 9,200.80

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Solution

The fourth proportional to 28,921.06, 43,382.40 and 9,200.80 is: 13,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.06 : 43,382.40 = 9,200.80 : x
  2. Step 2: Convert to fraction form
    28,921.06/43,382.40 = 9,200.80/x
  3. Step 3: Cross multiply
    28,921.06x = 43,382.40 × 9,200.80
  4. Step 4: Simplify right side
    28,921.06x = 399,152,785.92
  5. Step 5: Solve for x
    x = 399,152,785.92/28,921.06
  6. Step 6: Final answer
    x = 13,801.46

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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.