Home / 12,225.40-18,340.56-3,905.17

Finding the Fourth Proportional to 12,225.40, 18,340.56 and 3,905.17

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Solution

The fourth proportional to 12,225.40, 18,340.56 and 3,905.17 is: 5,858.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.40 : 18,340.56 = 3,905.17 : x
  2. Step 2: Convert to fraction form
    12,225.40/18,340.56 = 3,905.17/x
  3. Step 3: Cross multiply
    12,225.40x = 18,340.56 × 3,905.17
  4. Step 4: Simplify right side
    12,225.40x = 71,622,958.84
  5. Step 5: Solve for x
    x = 71,622,958.84/12,225.40
  6. Step 6: Final answer
    x = 5,858.54

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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.