Home / 13,218.17-18,241.91-8,734.06

Finding the Fourth Proportional to 13,218.17, 18,241.91 and 8,734.06

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Solution

The fourth proportional to 13,218.17, 18,241.91 and 8,734.06 is: 12,053.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.17 : 18,241.91 = 8,734.06 : x
  2. Step 2: Convert to fraction form
    13,218.17/18,241.91 = 8,734.06/x
  3. Step 3: Cross multiply
    13,218.17x = 18,241.91 × 8,734.06
  4. Step 4: Simplify right side
    13,218.17x = 159,325,948.34
  5. Step 5: Solve for x
    x = 159,325,948.34/13,218.17
  6. Step 6: Final answer
    x = 12,053.56

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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.