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Finding the Fourth Proportional to 19,909.94, 27,487.08 and 13,204.76

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Solution

The fourth proportional to 19,909.94, 27,487.08 and 13,204.76 is: 18,230.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.94 : 27,487.08 = 13,204.76 : x
  2. Step 2: Convert to fraction form
    19,909.94/27,487.08 = 13,204.76/x
  3. Step 3: Cross multiply
    19,909.94x = 27,487.08 × 13,204.76
  4. Step 4: Simplify right side
    19,909.94x = 362,960,157.07
  5. Step 5: Solve for x
    x = 362,960,157.07/19,909.94
  6. Step 6: Final answer
    x = 18,230.10

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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.