Home / 13,611.43-18,740.82-12,365.74

Finding the Fourth Proportional to 13,611.43, 18,740.82 and 12,365.74

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Solution

The fourth proportional to 13,611.43, 18,740.82 and 12,365.74 is: 17,025.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.43 : 18,740.82 = 12,365.74 : x
  2. Step 2: Convert to fraction form
    13,611.43/18,740.82 = 12,365.74/x
  3. Step 3: Cross multiply
    13,611.43x = 18,740.82 × 12,365.74
  4. Step 4: Simplify right side
    13,611.43x = 231,744,107.51
  5. Step 5: Solve for x
    x = 231,744,107.51/13,611.43
  6. Step 6: Final answer
    x = 17,025.70

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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.