Home / 13,175.52-18,181.80-7,869.12

Finding the Fourth Proportional to 13,175.52, 18,181.80 and 7,869.12

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Solution

The fourth proportional to 13,175.52, 18,181.80 and 7,869.12 is: 10,859.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.52 : 18,181.80 = 7,869.12 : x
  2. Step 2: Convert to fraction form
    13,175.52/18,181.80 = 7,869.12/x
  3. Step 3: Cross multiply
    13,175.52x = 18,181.80 × 7,869.12
  4. Step 4: Simplify right side
    13,175.52x = 143,074,766.02
  5. Step 5: Solve for x
    x = 143,074,766.02/13,175.52
  6. Step 6: Final answer
    x = 10,859.14

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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.