Home / 13,514.40-18,712.08-13,168.80

Finding the Fourth Proportional to 13,514.40, 18,712.08 and 13,168.80

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Solution

The fourth proportional to 13,514.40, 18,712.08 and 13,168.80 is: 18,233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,514.40 : 18,712.08 = 13,168.80 : x
  2. Step 2: Convert to fraction form
    13,514.40/18,712.08 = 13,168.80/x
  3. Step 3: Cross multiply
    13,514.40x = 18,712.08 × 13,168.80
  4. Step 4: Simplify right side
    13,514.40x = 246,415,639.10
  5. Step 5: Solve for x
    x = 246,415,639.10/13,514.40
  6. Step 6: Final answer
    x = 18,233.56

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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.