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Finding the Fourth Proportional to 18,486.56, 27,729.88 and 4,635.56

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Solution

The fourth proportional to 18,486.56, 27,729.88 and 4,635.56 is: 6,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.56 : 27,729.88 = 4,635.56 : x
  2. Step 2: Convert to fraction form
    18,486.56/27,729.88 = 4,635.56/x
  3. Step 3: Cross multiply
    18,486.56x = 27,729.88 × 4,635.56
  4. Step 4: Simplify right side
    18,486.56x = 128,543,580.27
  5. Step 5: Solve for x
    x = 128,543,580.27/18,486.56
  6. Step 6: Final answer
    x = 6,953.35

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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.