Home / 28,231.32-38,941.58-18,172.84

Finding the Fourth Proportional to 28,231.32, 38,941.58 and 18,172.84

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Solution

The fourth proportional to 28,231.32, 38,941.58 and 18,172.84 is: 25,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231.32 : 38,941.58 = 18,172.84 : x
  2. Step 2: Convert to fraction form
    28,231.32/38,941.58 = 18,172.84/x
  3. Step 3: Cross multiply
    28,231.32x = 38,941.58 × 18,172.84
  4. Step 4: Simplify right side
    28,231.32x = 707,679,102.69
  5. Step 5: Solve for x
    x = 707,679,102.69/28,231.32
  6. Step 6: Final answer
    x = 25,067.16

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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.