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Finding the Fourth Proportional to 18,959.39, 28,416.95 and 14,264.33

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Solution

The fourth proportional to 18,959.39, 28,416.95 and 14,264.33 is: 21,379.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959.39 : 28,416.95 = 14,264.33 : x
  2. Step 2: Convert to fraction form
    18,959.39/28,416.95 = 14,264.33/x
  3. Step 3: Cross multiply
    18,959.39x = 28,416.95 × 14,264.33
  4. Step 4: Simplify right side
    18,959.39x = 405,348,712.52
  5. Step 5: Solve for x
    x = 405,348,712.52/18,959.39
  6. Step 6: Final answer
    x = 21,379.84

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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.