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Finding the Fourth Proportional to 21,591.64, 29,796.16 and 12,031.93

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Solution

The fourth proportional to 21,591.64, 29,796.16 and 12,031.93 is: 16,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,591.64 : 29,796.16 = 12,031.93 : x
  2. Step 2: Convert to fraction form
    21,591.64/29,796.16 = 12,031.93/x
  3. Step 3: Cross multiply
    21,591.64x = 29,796.16 × 12,031.93
  4. Step 4: Simplify right side
    21,591.64x = 358,505,223.47
  5. Step 5: Solve for x
    x = 358,505,223.47/21,591.64
  6. Step 6: Final answer
    x = 16,603.89

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