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Finding the Fourth Proportional to 18,360.72, 25,337.94 and 9,977.22

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Solution

The fourth proportional to 18,360.72, 25,337.94 and 9,977.22 is: 13,768.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.72 : 25,337.94 = 9,977.22 : x
  2. Step 2: Convert to fraction form
    18,360.72/25,337.94 = 9,977.22/x
  3. Step 3: Cross multiply
    18,360.72x = 25,337.94 × 9,977.22
  4. Step 4: Simplify right side
    18,360.72x = 252,802,201.73
  5. Step 5: Solve for x
    x = 252,802,201.73/18,360.72
  6. Step 6: Final answer
    x = 13,768.64

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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.