Home / 13,218.13-18,241.53-7,250.05

Finding the Fourth Proportional to 13,218.13, 18,241.53 and 7,250.05

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Solution

The fourth proportional to 13,218.13, 18,241.53 and 7,250.05 is: 10,005.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.13 : 18,241.53 = 7,250.05 : x
  2. Step 2: Convert to fraction form
    13,218.13/18,241.53 = 7,250.05/x
  3. Step 3: Cross multiply
    13,218.13x = 18,241.53 × 7,250.05
  4. Step 4: Simplify right side
    13,218.13x = 132,252,004.58
  5. Step 5: Solve for x
    x = 132,252,004.58/13,218.13
  6. Step 6: Final answer
    x = 10,005.35

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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.