Home / 18,519.92-25,557.56-10,136.88

Finding the Fourth Proportional to 18,519.92, 25,557.56 and 10,136.88

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Solution

The fourth proportional to 18,519.92, 25,557.56 and 10,136.88 is: 13,988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.92 : 25,557.56 = 10,136.88 : x
  2. Step 2: Convert to fraction form
    18,519.92/25,557.56 = 10,136.88/x
  3. Step 3: Cross multiply
    18,519.92x = 25,557.56 × 10,136.88
  4. Step 4: Simplify right side
    18,519.92x = 259,073,918.81
  5. Step 5: Solve for x
    x = 259,073,918.81/18,519.92
  6. Step 6: Final answer
    x = 13,988.93

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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.