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Finding the Fourth Proportional to 17,999.10, 26,998.65 and 17,318.70

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Solution

The fourth proportional to 17,999.10, 26,998.65 and 17,318.70 is: 25,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,999.10 : 26,998.65 = 17,318.70 : x
  2. Step 2: Convert to fraction form
    17,999.10/26,998.65 = 17,318.70/x
  3. Step 3: Cross multiply
    17,999.10x = 26,998.65 × 17,318.70
  4. Step 4: Simplify right side
    17,999.10x = 467,581,519.76
  5. Step 5: Solve for x
    x = 467,581,519.76/17,999.10
  6. Step 6: Final answer
    x = 25,978.05

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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.