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Finding the Fourth Proportional to 17,989.14, 26,985.36 and 8,633.64

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Solution

The fourth proportional to 17,989.14, 26,985.36 and 8,633.64 is: 12,951.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,989.14 : 26,985.36 = 8,633.64 : x
  2. Step 2: Convert to fraction form
    17,989.14/26,985.36 = 8,633.64/x
  3. Step 3: Cross multiply
    17,989.14x = 26,985.36 × 8,633.64
  4. Step 4: Simplify right side
    17,989.14x = 232,981,883.51
  5. Step 5: Solve for x
    x = 232,981,883.51/17,989.14
  6. Step 6: Final answer
    x = 12,951.25

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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.