Home / 19,281.76-28,922.32-6,131.68

Finding the Fourth Proportional to 19,281.76, 28,922.32 and 6,131.68

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Solution

The fourth proportional to 19,281.76, 28,922.32 and 6,131.68 is: 9,197.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,281.76 : 28,922.32 = 6,131.68 : x
  2. Step 2: Convert to fraction form
    19,281.76/28,922.32 = 6,131.68/x
  3. Step 3: Cross multiply
    19,281.76x = 28,922.32 × 6,131.68
  4. Step 4: Simplify right side
    19,281.76x = 177,342,411.10
  5. Step 5: Solve for x
    x = 177,342,411.10/19,281.76
  6. Step 6: Final answer
    x = 9,197.42

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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.