Home / 18,311.78-25,270.75-10,355.19

Finding the Fourth Proportional to 18,311.78, 25,270.75 and 10,355.19

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Solution

The fourth proportional to 18,311.78, 25,270.75 and 10,355.19 is: 14,290.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.78 : 25,270.75 = 10,355.19 : x
  2. Step 2: Convert to fraction form
    18,311.78/25,270.75 = 10,355.19/x
  3. Step 3: Cross multiply
    18,311.78x = 25,270.75 × 10,355.19
  4. Step 4: Simplify right side
    18,311.78x = 261,683,365.92
  5. Step 5: Solve for x
    x = 261,683,365.92/18,311.78
  6. Step 6: Final answer
    x = 14,290.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.