Home / 13,684.15-18,883.55-7,716.37

Finding the Fourth Proportional to 13,684.15, 18,883.55 and 7,716.37

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Solution

The fourth proportional to 13,684.15, 18,883.55 and 7,716.37 is: 10,648.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.15 : 18,883.55 = 7,716.37 : x
  2. Step 2: Convert to fraction form
    13,684.15/18,883.55 = 7,716.37/x
  3. Step 3: Cross multiply
    13,684.15x = 18,883.55 × 7,716.37
  4. Step 4: Simplify right side
    13,684.15x = 145,712,422.80
  5. Step 5: Solve for x
    x = 145,712,422.80/13,684.15
  6. Step 6: Final answer
    x = 10,648.27

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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.