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Finding the Fourth Proportional to 12,655.99, 18,990.24 and 6,087.70

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Solution

The fourth proportional to 12,655.99, 18,990.24 and 6,087.70 is: 9,134.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.99 : 18,990.24 = 6,087.70 : x
  2. Step 2: Convert to fraction form
    12,655.99/18,990.24 = 6,087.70/x
  3. Step 3: Cross multiply
    12,655.99x = 18,990.24 × 6,087.70
  4. Step 4: Simplify right side
    12,655.99x = 115,606,884.05
  5. Step 5: Solve for x
    x = 115,606,884.05/12,655.99
  6. Step 6: Final answer
    x = 9,134.56

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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.