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Finding the Fourth Proportional to 13,905.19, 20,805.46 and 9,753.30

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Solution

The fourth proportional to 13,905.19, 20,805.46 and 9,753.30 is: 14,593.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.19 : 20,805.46 = 9,753.30 : x
  2. Step 2: Convert to fraction form
    13,905.19/20,805.46 = 9,753.30/x
  3. Step 3: Cross multiply
    13,905.19x = 20,805.46 × 9,753.30
  4. Step 4: Simplify right side
    13,905.19x = 202,921,893.02
  5. Step 5: Solve for x
    x = 202,921,893.02/13,905.19
  6. Step 6: Final answer
    x = 14,593.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.