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Finding the Fourth Proportional to 18,757.04, 28,135.56 and 8,079.02

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Solution

The fourth proportional to 18,757.04, 28,135.56 and 8,079.02 is: 12,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.04 : 28,135.56 = 8,079.02 : x
  2. Step 2: Convert to fraction form
    18,757.04/28,135.56 = 8,079.02/x
  3. Step 3: Cross multiply
    18,757.04x = 28,135.56 × 8,079.02
  4. Step 4: Simplify right side
    18,757.04x = 227,307,751.95
  5. Step 5: Solve for x
    x = 227,307,751.95/18,757.04
  6. Step 6: Final answer
    x = 12,118.53

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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.