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Finding the Fourth Proportional to 18,455.03, 27,640.92 and 8,573.51

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Solution

The fourth proportional to 18,455.03, 27,640.92 and 8,573.51 is: 12,840.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.03 : 27,640.92 = 8,573.51 : x
  2. Step 2: Convert to fraction form
    18,455.03/27,640.92 = 8,573.51/x
  3. Step 3: Cross multiply
    18,455.03x = 27,640.92 × 8,573.51
  4. Step 4: Simplify right side
    18,455.03x = 236,979,565.82
  5. Step 5: Solve for x
    x = 236,979,565.82/18,455.03
  6. Step 6: Final answer
    x = 12,840.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.