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Finding the Fourth Proportional to 18,333.90, 25,300.81 and 9,950.42

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Solution

The fourth proportional to 18,333.90, 25,300.81 and 9,950.42 is: 13,731.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,333.90 : 25,300.81 = 9,950.42 : x
  2. Step 2: Convert to fraction form
    18,333.90/25,300.81 = 9,950.42/x
  3. Step 3: Cross multiply
    18,333.90x = 25,300.81 × 9,950.42
  4. Step 4: Simplify right side
    18,333.90x = 251,753,685.84
  5. Step 5: Solve for x
    x = 251,753,685.84/18,333.90
  6. Step 6: Final answer
    x = 13,731.59

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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.