Home / 19,276.47-28,919.28-6,128.85

Finding the Fourth Proportional to 19,276.47, 28,919.28 and 6,128.85

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Solution

The fourth proportional to 19,276.47, 28,919.28 and 6,128.85 is: 9,194.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,276.47 : 28,919.28 = 6,128.85 : x
  2. Step 2: Convert to fraction form
    19,276.47/28,919.28 = 6,128.85/x
  3. Step 3: Cross multiply
    19,276.47x = 28,919.28 × 6,128.85
  4. Step 4: Simplify right side
    19,276.47x = 177,241,929.23
  5. Step 5: Solve for x
    x = 177,241,929.23/19,276.47
  6. Step 6: Final answer
    x = 9,194.73

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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.