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Finding the Fourth Proportional to 20,601, 28,418.45 and 12,537.09

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Solution

The fourth proportional to 20,601, 28,418.45 and 12,537.09 is: 17,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601 : 28,418.45 = 12,537.09 : x
  2. Step 2: Convert to fraction form
    20,601/28,418.45 = 12,537.09/x
  3. Step 3: Cross multiply
    20,601x = 28,418.45 × 12,537.09
  4. Step 4: Simplify right side
    20,601x = 356,284,602.63
  5. Step 5: Solve for x
    x = 356,284,602.63/20,601
  6. Step 6: Final answer
    x = 17,294.53

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1.5x scale

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.