Home / 13,351.12-18,425.03-8,635.40

Finding the Fourth Proportional to 13,351.12, 18,425.03 and 8,635.40

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Solution

The fourth proportional to 13,351.12, 18,425.03 and 8,635.40 is: 11,917.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.12 : 18,425.03 = 8,635.40 : x
  2. Step 2: Convert to fraction form
    13,351.12/18,425.03 = 8,635.40/x
  3. Step 3: Cross multiply
    13,351.12x = 18,425.03 × 8,635.40
  4. Step 4: Simplify right side
    13,351.12x = 159,107,504.06
  5. Step 5: Solve for x
    x = 159,107,504.06/13,351.12
  6. Step 6: Final answer
    x = 11,917.17

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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.