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Finding the Fourth Proportional to 21,047.92, 29,040.87 and 12,097.96

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Solution

The fourth proportional to 21,047.92, 29,040.87 and 12,097.96 is: 16,692.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.92 : 29,040.87 = 12,097.96 : x
  2. Step 2: Convert to fraction form
    21,047.92/29,040.87 = 12,097.96/x
  3. Step 3: Cross multiply
    21,047.92x = 29,040.87 × 12,097.96
  4. Step 4: Simplify right side
    21,047.92x = 351,335,283.63
  5. Step 5: Solve for x
    x = 351,335,283.63/21,047.92
  6. Step 6: Final answer
    x = 16,692.16

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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.