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Finding the Fourth Proportional to 17,991.99, 26,987.99 and 6,305.21

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Solution

The fourth proportional to 17,991.99, 26,987.99 and 6,305.21 is: 9,457.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.99 : 26,987.99 = 6,305.21 : x
  2. Step 2: Convert to fraction form
    17,991.99/26,987.99 = 6,305.21/x
  3. Step 3: Cross multiply
    17,991.99x = 26,987.99 × 6,305.21
  4. Step 4: Simplify right side
    17,991.99x = 170,164,944.43
  5. Step 5: Solve for x
    x = 170,164,944.43/17,991.99
  6. Step 6: Final answer
    x = 9,457.82

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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.