Home / 13,513.91-18,641.43-8,132.63

Finding the Fourth Proportional to 13,513.91, 18,641.43 and 8,132.63

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Solution

The fourth proportional to 13,513.91, 18,641.43 and 8,132.63 is: 11,218.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.91 : 18,641.43 = 8,132.63 : x
  2. Step 2: Convert to fraction form
    13,513.91/18,641.43 = 8,132.63/x
  3. Step 3: Cross multiply
    13,513.91x = 18,641.43 × 8,132.63
  4. Step 4: Simplify right side
    13,513.91x = 151,603,759.65
  5. Step 5: Solve for x
    x = 151,603,759.65/13,513.91
  6. Step 6: Final answer
    x = 11,218.35

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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.