Home / 13,418.01-18,513.07-8,387.33

Finding the Fourth Proportional to 13,418.01, 18,513.07 and 8,387.33

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Solution

The fourth proportional to 13,418.01, 18,513.07 and 8,387.33 is: 11,572.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.01 : 18,513.07 = 8,387.33 : x
  2. Step 2: Convert to fraction form
    13,418.01/18,513.07 = 8,387.33/x
  3. Step 3: Cross multiply
    13,418.01x = 18,513.07 × 8,387.33
  4. Step 4: Simplify right side
    13,418.01x = 155,275,185.47
  5. Step 5: Solve for x
    x = 155,275,185.47/13,418.01
  6. Step 6: Final answer
    x = 11,572.15

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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.