Home / 19,109.64-28,664.46-6,629.68

Finding the Fourth Proportional to 19,109.64, 28,664.46 and 6,629.68

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Solution

The fourth proportional to 19,109.64, 28,664.46 and 6,629.68 is: 9,944.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,109.64 : 28,664.46 = 6,629.68 : x
  2. Step 2: Convert to fraction form
    19,109.64/28,664.46 = 6,629.68/x
  3. Step 3: Cross multiply
    19,109.64x = 28,664.46 × 6,629.68
  4. Step 4: Simplify right side
    19,109.64x = 190,036,197.17
  5. Step 5: Solve for x
    x = 190,036,197.17/19,109.64
  6. Step 6: Final answer
    x = 9,944.52

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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.