Home / 18,487.35-27,705.09-12,318.39

Finding the Fourth Proportional to 18,487.35, 27,705.09 and 12,318.39

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Solution

The fourth proportional to 18,487.35, 27,705.09 and 12,318.39 is: 18,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.35 : 27,705.09 = 12,318.39 : x
  2. Step 2: Convert to fraction form
    18,487.35/27,705.09 = 12,318.39/x
  3. Step 3: Cross multiply
    18,487.35x = 27,705.09 × 12,318.39
  4. Step 4: Simplify right side
    18,487.35x = 341,282,103.61
  5. Step 5: Solve for x
    x = 341,282,103.61/18,487.35
  6. Step 6: Final answer
    x = 18,460.30

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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.