Home / 18,311.89-27,439.56-12,365.47

Finding the Fourth Proportional to 18,311.89, 27,439.56 and 12,365.47

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Solution

The fourth proportional to 18,311.89, 27,439.56 and 12,365.47 is: 18,529.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.89 : 27,439.56 = 12,365.47 : x
  2. Step 2: Convert to fraction form
    18,311.89/27,439.56 = 12,365.47/x
  3. Step 3: Cross multiply
    18,311.89x = 27,439.56 × 12,365.47
  4. Step 4: Simplify right side
    18,311.89x = 339,302,987.39
  5. Step 5: Solve for x
    x = 339,302,987.39/18,311.89
  6. Step 6: Final answer
    x = 18,529.11

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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.