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Finding the Fourth Proportional to 15,025.83, 20,734.05 and 8,310.39

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Solution

The fourth proportional to 15,025.83, 20,734.05 and 8,310.39 is: 11,467.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.83 : 20,734.05 = 8,310.39 : x
  2. Step 2: Convert to fraction form
    15,025.83/20,734.05 = 8,310.39/x
  3. Step 3: Cross multiply
    15,025.83x = 20,734.05 × 8,310.39
  4. Step 4: Simplify right side
    15,025.83x = 172,308,041.78
  5. Step 5: Solve for x
    x = 172,308,041.78/15,025.83
  6. Step 6: Final answer
    x = 11,467.46

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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.