Home / 13,415.36-18,511.54-7,446.20

Finding the Fourth Proportional to 13,415.36, 18,511.54 and 7,446.20

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Solution

The fourth proportional to 13,415.36, 18,511.54 and 7,446.20 is: 10,274.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.36 : 18,511.54 = 7,446.20 : x
  2. Step 2: Convert to fraction form
    13,415.36/18,511.54 = 7,446.20/x
  3. Step 3: Cross multiply
    13,415.36x = 18,511.54 × 7,446.20
  4. Step 4: Simplify right side
    13,415.36x = 137,840,517.97
  5. Step 5: Solve for x
    x = 137,840,517.97/13,415.36
  6. Step 6: Final answer
    x = 10,274.83

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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.