Home / 13,170.53-18,171.65-7,863.41

Finding the Fourth Proportional to 13,170.53, 18,171.65 and 7,863.41

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Solution

The fourth proportional to 13,170.53, 18,171.65 and 7,863.41 is: 10,849.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.53 : 18,171.65 = 7,863.41 : x
  2. Step 2: Convert to fraction form
    13,170.53/18,171.65 = 7,863.41/x
  3. Step 3: Cross multiply
    13,170.53x = 18,171.65 × 7,863.41
  4. Step 4: Simplify right side
    13,170.53x = 142,891,199.41
  5. Step 5: Solve for x
    x = 142,891,199.41/13,170.53
  6. Step 6: Final answer
    x = 10,849.31

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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.