Home / 19,149.60-28,724.40-5,109.68

Finding the Fourth Proportional to 19,149.60, 28,724.40 and 5,109.68

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Solution

The fourth proportional to 19,149.60, 28,724.40 and 5,109.68 is: 7,664.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,149.60 : 28,724.40 = 5,109.68 : x
  2. Step 2: Convert to fraction form
    19,149.60/28,724.40 = 5,109.68/x
  3. Step 3: Cross multiply
    19,149.60x = 28,724.40 × 5,109.68
  4. Step 4: Simplify right side
    19,149.60x = 146,772,388.06
  5. Step 5: Solve for x
    x = 146,772,388.06/19,149.60
  6. Step 6: Final answer
    x = 7,664.52

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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.