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Finding the Fourth Proportional to 13,998.64, 20,997.94 and 9,602.78

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Solution

The fourth proportional to 13,998.64, 20,997.94 and 9,602.78 is: 14,404.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.64 : 20,997.94 = 9,602.78 : x
  2. Step 2: Convert to fraction form
    13,998.64/20,997.94 = 9,602.78/x
  3. Step 3: Cross multiply
    13,998.64x = 20,997.94 × 9,602.78
  4. Step 4: Simplify right side
    13,998.64x = 201,638,598.27
  5. Step 5: Solve for x
    x = 201,638,598.27/13,998.64
  6. Step 6: Final answer
    x = 14,404.16

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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.