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Finding the Fourth Proportional to 28,296.63, 39,051.68 and 18,246

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Solution

The fourth proportional to 28,296.63, 39,051.68 and 18,246 is: 25,180.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,296.63 : 39,051.68 = 18,246 : x
  2. Step 2: Convert to fraction form
    28,296.63/39,051.68 = 18,246/x
  3. Step 3: Cross multiply
    28,296.63x = 39,051.68 × 18,246
  4. Step 4: Simplify right side
    28,296.63x = 712,536,862.05
  5. Step 5: Solve for x
    x = 712,536,862.05/28,296.63
  6. Step 6: Final answer
    x = 25,180.98

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Why These Related Problems?

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