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Finding the Fourth Proportional to 14,433.88, 19,918.60 and 8,146.28

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Solution

The fourth proportional to 14,433.88, 19,918.60 and 8,146.28 is: 11,241.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,433.88 : 19,918.60 = 8,146.28 : x
  2. Step 2: Convert to fraction form
    14,433.88/19,918.60 = 8,146.28/x
  3. Step 3: Cross multiply
    14,433.88x = 19,918.60 × 8,146.28
  4. Step 4: Simplify right side
    14,433.88x = 162,262,492.81
  5. Step 5: Solve for x
    x = 162,262,492.81/14,433.88
  6. Step 6: Final answer
    x = 11,241.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.