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Finding the Fourth Proportional to 14,591.40, 21,887.10 and 9,666.60

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Solution

The fourth proportional to 14,591.40, 21,887.10 and 9,666.60 is: 14,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,591.40 : 21,887.10 = 9,666.60 : x
  2. Step 2: Convert to fraction form
    14,591.40/21,887.10 = 9,666.60/x
  3. Step 3: Cross multiply
    14,591.40x = 21,887.10 × 9,666.60
  4. Step 4: Simplify right side
    14,591.40x = 211,573,840.86
  5. Step 5: Solve for x
    x = 211,573,840.86/14,591.40
  6. Step 6: Final answer
    x = 14,499.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.