Home / 13,170.09-18,171.21-8,068.32

Finding the Fourth Proportional to 13,170.09, 18,171.21 and 8,068.32

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Solution

The fourth proportional to 13,170.09, 18,171.21 and 8,068.32 is: 11,132.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.09 : 18,171.21 = 8,068.32 : x
  2. Step 2: Convert to fraction form
    13,170.09/18,171.21 = 8,068.32/x
  3. Step 3: Cross multiply
    13,170.09x = 18,171.21 × 8,068.32
  4. Step 4: Simplify right side
    13,170.09x = 146,611,137.07
  5. Step 5: Solve for x
    x = 146,611,137.07/13,170.09
  6. Step 6: Final answer
    x = 11,132.13

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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.