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Finding the Fourth Proportional to 18,607.68, 27,908.64 and 5,458.68

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Solution

The fourth proportional to 18,607.68, 27,908.64 and 5,458.68 is: 8,187.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.68 : 27,908.64 = 5,458.68 : x
  2. Step 2: Convert to fraction form
    18,607.68/27,908.64 = 5,458.68/x
  3. Step 3: Cross multiply
    18,607.68x = 27,908.64 × 5,458.68
  4. Step 4: Simplify right side
    18,607.68x = 152,344,335.00
  5. Step 5: Solve for x
    x = 152,344,335.00/18,607.68
  6. Step 6: Final answer
    x = 8,187.18

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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.