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Finding the Fourth Proportional to 21,201.46, 29,259.03 and 12,250.15

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Solution

The fourth proportional to 21,201.46, 29,259.03 and 12,250.15 is: 16,905.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.46 : 29,259.03 = 12,250.15 : x
  2. Step 2: Convert to fraction form
    21,201.46/29,259.03 = 12,250.15/x
  3. Step 3: Cross multiply
    21,201.46x = 29,259.03 × 12,250.15
  4. Step 4: Simplify right side
    21,201.46x = 358,427,506.35
  5. Step 5: Solve for x
    x = 358,427,506.35/21,201.46
  6. Step 6: Final answer
    x = 16,905.79

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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.