Home / 13,863.86-19,132.90-9,144.80

Finding the Fourth Proportional to 13,863.86, 19,132.90 and 9,144.80

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Solution

The fourth proportional to 13,863.86, 19,132.90 and 9,144.80 is: 12,620.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.86 : 19,132.90 = 9,144.80 : x
  2. Step 2: Convert to fraction form
    13,863.86/19,132.90 = 9,144.80/x
  3. Step 3: Cross multiply
    13,863.86x = 19,132.90 × 9,144.80
  4. Step 4: Simplify right side
    13,863.86x = 174,966,425.39
  5. Step 5: Solve for x
    x = 174,966,425.39/13,863.86
  6. Step 6: Final answer
    x = 12,620.33

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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.