Home / 13,226.09-18,248.31-8,513.11

Finding the Fourth Proportional to 13,226.09, 18,248.31 and 8,513.11

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Solution

The fourth proportional to 13,226.09, 18,248.31 and 8,513.11 is: 11,745.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,226.09 : 18,248.31 = 8,513.11 : x
  2. Step 2: Convert to fraction form
    13,226.09/18,248.31 = 8,513.11/x
  3. Step 3: Cross multiply
    13,226.09x = 18,248.31 × 8,513.11
  4. Step 4: Simplify right side
    13,226.09x = 155,349,824.72
  5. Step 5: Solve for x
    x = 155,349,824.72/13,226.09
  6. Step 6: Final answer
    x = 11,745.71

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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.