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Finding the Fourth Proportional to 12,310.68, 18,464.28 and 7,028.55

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Solution

The fourth proportional to 12,310.68, 18,464.28 and 7,028.55 is: 10,541.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.68 : 18,464.28 = 7,028.55 : x
  2. Step 2: Convert to fraction form
    12,310.68/18,464.28 = 7,028.55/x
  3. Step 3: Cross multiply
    12,310.68x = 18,464.28 × 7,028.55
  4. Step 4: Simplify right side
    12,310.68x = 129,777,056.67
  5. Step 5: Solve for x
    x = 129,777,056.67/12,310.68
  6. Step 6: Final answer
    x = 10,541.82

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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.