Home / 28,729.20-43,100.70-9,007.76

Finding the Fourth Proportional to 28,729.20, 43,100.70 and 9,007.76

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Solution

The fourth proportional to 28,729.20, 43,100.70 and 9,007.76 is: 13,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729.20 : 43,100.70 = 9,007.76 : x
  2. Step 2: Convert to fraction form
    28,729.20/43,100.70 = 9,007.76/x
  3. Step 3: Cross multiply
    28,729.20x = 43,100.70 × 9,007.76
  4. Step 4: Simplify right side
    28,729.20x = 388,240,618.30
  5. Step 5: Solve for x
    x = 388,240,618.30/28,729.20
  6. Step 6: Final answer
    x = 13,513.80

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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.