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Finding the Fourth Proportional to 15,483.95, 21,367.50 and 8,410.22

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Solution

The fourth proportional to 15,483.95, 21,367.50 and 8,410.22 is: 11,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.95 : 21,367.50 = 8,410.22 : x
  2. Step 2: Convert to fraction form
    15,483.95/21,367.50 = 8,410.22/x
  3. Step 3: Cross multiply
    15,483.95x = 21,367.50 × 8,410.22
  4. Step 4: Simplify right side
    15,483.95x = 179,705,375.85
  5. Step 5: Solve for x
    x = 179,705,375.85/15,483.95
  6. Step 6: Final answer
    x = 11,605.91

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1.5x scale

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.