Home / 12,338.40-18,504.93-3,905.57

Finding the Fourth Proportional to 12,338.40, 18,504.93 and 3,905.57

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Solution

The fourth proportional to 12,338.40, 18,504.93 and 3,905.57 is: 5,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.40 : 18,504.93 = 3,905.57 : x
  2. Step 2: Convert to fraction form
    12,338.40/18,504.93 = 3,905.57/x
  3. Step 3: Cross multiply
    12,338.40x = 18,504.93 × 3,905.57
  4. Step 4: Simplify right side
    12,338.40x = 72,272,360.37
  5. Step 5: Solve for x
    x = 72,272,360.37/12,338.40
  6. Step 6: Final answer
    x = 5,857.51

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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.