Home / 13,175.31-18,180.14-7,869

Finding the Fourth Proportional to 13,175.31, 18,180.14 and 7,869

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Solution

The fourth proportional to 13,175.31, 18,180.14 and 7,869 is: 10,858.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.31 : 18,180.14 = 7,869 : x
  2. Step 2: Convert to fraction form
    13,175.31/18,180.14 = 7,869/x
  3. Step 3: Cross multiply
    13,175.31x = 18,180.14 × 7,869
  4. Step 4: Simplify right side
    13,175.31x = 143,059,482.32
  5. Step 5: Solve for x
    x = 143,059,482.32/13,175.31
  6. Step 6: Final answer
    x = 10,858.15

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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.