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Finding the Fourth Proportional to 17,910.90, 26,869.05 and 9,141.03

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Solution

The fourth proportional to 17,910.90, 26,869.05 and 9,141.03 is: 13,712.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,910.90 : 26,869.05 = 9,141.03 : x
  2. Step 2: Convert to fraction form
    17,910.90/26,869.05 = 9,141.03/x
  3. Step 3: Cross multiply
    17,910.90x = 26,869.05 × 9,141.03
  4. Step 4: Simplify right side
    17,910.90x = 245,610,792.12
  5. Step 5: Solve for x
    x = 245,610,792.12/17,910.90
  6. Step 6: Final answer
    x = 13,712.92

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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.