Home / 28,892.20-43,338.30-9,172.30

Finding the Fourth Proportional to 28,892.20, 43,338.30 and 9,172.30

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Solution

The fourth proportional to 28,892.20, 43,338.30 and 9,172.30 is: 13,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,892.20 : 43,338.30 = 9,172.30 : x
  2. Step 2: Convert to fraction form
    28,892.20/43,338.30 = 9,172.30/x
  3. Step 3: Cross multiply
    28,892.20x = 43,338.30 × 9,172.30
  4. Step 4: Simplify right side
    28,892.20x = 397,511,889.09
  5. Step 5: Solve for x
    x = 397,511,889.09/28,892.20
  6. Step 6: Final answer
    x = 13,758.45

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1.5x scale

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.