Home / 13,218.10-18,241.11-7,553.59

Finding the Fourth Proportional to 13,218.10, 18,241.11 and 7,553.59

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Solution

The fourth proportional to 13,218.10, 18,241.11 and 7,553.59 is: 10,424.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.10 : 18,241.11 = 7,553.59 : x
  2. Step 2: Convert to fraction form
    13,218.10/18,241.11 = 7,553.59/x
  3. Step 3: Cross multiply
    13,218.10x = 18,241.11 × 7,553.59
  4. Step 4: Simplify right side
    13,218.10x = 137,785,866.08
  5. Step 5: Solve for x
    x = 137,785,866.08/13,218.10
  6. Step 6: Final answer
    x = 10,424.03

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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.