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Finding the Fourth Proportional to 18,369.56, 25,350.01 and 9,986.06

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Solution

The fourth proportional to 18,369.56, 25,350.01 and 9,986.06 is: 13,780.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.56 : 25,350.01 = 9,986.06 : x
  2. Step 2: Convert to fraction form
    18,369.56/25,350.01 = 9,986.06/x
  3. Step 3: Cross multiply
    18,369.56x = 25,350.01 × 9,986.06
  4. Step 4: Simplify right side
    18,369.56x = 253,146,759.27
  5. Step 5: Solve for x
    x = 253,146,759.27/18,369.56
  6. Step 6: Final answer
    x = 13,780.77

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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.