Home / 13,420.15-18,537.24-10,213.97

Finding the Fourth Proportional to 13,420.15, 18,537.24 and 10,213.97

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Solution

The fourth proportional to 13,420.15, 18,537.24 and 10,213.97 is: 14,108.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.15 : 18,537.24 = 10,213.97 : x
  2. Step 2: Convert to fraction form
    13,420.15/18,537.24 = 10,213.97/x
  3. Step 3: Cross multiply
    13,420.15x = 18,537.24 × 10,213.97
  4. Step 4: Simplify right side
    13,420.15x = 189,338,669.49
  5. Step 5: Solve for x
    x = 189,338,669.49/13,420.15
  6. Step 6: Final answer
    x = 14,108.54

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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.