Home / 13,221.04-18,250.89-8,447.26

Finding the Fourth Proportional to 13,221.04, 18,250.89 and 8,447.26

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Solution

The fourth proportional to 13,221.04, 18,250.89 and 8,447.26 is: 11,660.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.04 : 18,250.89 = 8,447.26 : x
  2. Step 2: Convert to fraction form
    13,221.04/18,250.89 = 8,447.26/x
  3. Step 3: Cross multiply
    13,221.04x = 18,250.89 × 8,447.26
  4. Step 4: Simplify right side
    13,221.04x = 154,170,013.06
  5. Step 5: Solve for x
    x = 154,170,013.06/13,221.04
  6. Step 6: Final answer
    x = 11,660.96

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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.