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Finding the Fourth Proportional to 18,682.68, 28,023.98 and 7,586.76

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Solution

The fourth proportional to 18,682.68, 28,023.98 and 7,586.76 is: 11,380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.68 : 28,023.98 = 7,586.76 : x
  2. Step 2: Convert to fraction form
    18,682.68/28,023.98 = 7,586.76/x
  3. Step 3: Cross multiply
    18,682.68x = 28,023.98 × 7,586.76
  4. Step 4: Simplify right side
    18,682.68x = 212,611,277.66
  5. Step 5: Solve for x
    x = 212,611,277.66/18,682.68
  6. Step 6: Final answer
    x = 11,380.13

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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.