Home / 18,136.40-25,028.68-10,178.32

Finding the Fourth Proportional to 18,136.40, 25,028.68 and 10,178.32

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Solution

The fourth proportional to 18,136.40, 25,028.68 and 10,178.32 is: 14,046.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.40 : 25,028.68 = 10,178.32 : x
  2. Step 2: Convert to fraction form
    18,136.40/25,028.68 = 10,178.32/x
  3. Step 3: Cross multiply
    18,136.40x = 25,028.68 × 10,178.32
  4. Step 4: Simplify right side
    18,136.40x = 254,749,914.22
  5. Step 5: Solve for x
    x = 254,749,914.22/18,136.40
  6. Step 6: Final answer
    x = 14,046.33

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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.