Home / 15,483.53-21,367.39-8,409.95

Finding the Fourth Proportional to 15,483.53, 21,367.39 and 8,409.95

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Solution

The fourth proportional to 15,483.53, 21,367.39 and 8,409.95 is: 11,605.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.53 : 21,367.39 = 8,409.95 : x
  2. Step 2: Convert to fraction form
    15,483.53/21,367.39 = 8,409.95/x
  3. Step 3: Cross multiply
    15,483.53x = 21,367.39 × 8,409.95
  4. Step 4: Simplify right side
    15,483.53x = 179,698,713.92
  5. Step 5: Solve for x
    x = 179,698,713.92/15,483.53
  6. Step 6: Final answer
    x = 11,605.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.