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Finding the Fourth Proportional to 11,994.40, 17,983.40 and 5,417

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Solution

The fourth proportional to 11,994.40, 17,983.40 and 5,417 is: 8,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,994.40 : 17,983.40 = 5,417 : x
  2. Step 2: Convert to fraction form
    11,994.40/17,983.40 = 5,417/x
  3. Step 3: Cross multiply
    11,994.40x = 17,983.40 × 5,417
  4. Step 4: Simplify right side
    11,994.40x = 97,416,077.80
  5. Step 5: Solve for x
    x = 97,416,077.80/11,994.40
  6. Step 6: Final answer
    x = 8,121.80

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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.