Home / 18,121.42-25,007.80-10,950.32

Finding the Fourth Proportional to 18,121.42, 25,007.80 and 10,950.32

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Solution

The fourth proportional to 18,121.42, 25,007.80 and 10,950.32 is: 15,111.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.42 : 25,007.80 = 10,950.32 : x
  2. Step 2: Convert to fraction form
    18,121.42/25,007.80 = 10,950.32/x
  3. Step 3: Cross multiply
    18,121.42x = 25,007.80 × 10,950.32
  4. Step 4: Simplify right side
    18,121.42x = 273,843,412.50
  5. Step 5: Solve for x
    x = 273,843,412.50/18,121.42
  6. Step 6: Final answer
    x = 15,111.59

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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.