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Finding the Fourth Proportional to 18,316.88, 27,439.80 and 14,402

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Solution

The fourth proportional to 18,316.88, 27,439.80 and 14,402 is: 21,575.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,316.88 : 27,439.80 = 14,402 : x
  2. Step 2: Convert to fraction form
    18,316.88/27,439.80 = 14,402/x
  3. Step 3: Cross multiply
    18,316.88x = 27,439.80 × 14,402
  4. Step 4: Simplify right side
    18,316.88x = 395,187,999.60
  5. Step 5: Solve for x
    x = 395,187,999.60/18,316.88
  6. Step 6: Final answer
    x = 21,575.07

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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.