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Finding the Fourth Proportional to 18,795.30, 28,192.95 and 8,407.05

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Solution

The fourth proportional to 18,795.30, 28,192.95 and 8,407.05 is: 12,610.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795.30 : 28,192.95 = 8,407.05 : x
  2. Step 2: Convert to fraction form
    18,795.30/28,192.95 = 8,407.05/x
  3. Step 3: Cross multiply
    18,795.30x = 28,192.95 × 8,407.05
  4. Step 4: Simplify right side
    18,795.30x = 237,019,540.30
  5. Step 5: Solve for x
    x = 237,019,540.30/18,795.30
  6. Step 6: Final answer
    x = 12,610.58

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1.5x scale

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.