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Finding the Fourth Proportional to 13,230.96, 19,820.64 and 7,369.92

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Solution

The fourth proportional to 13,230.96, 19,820.64 and 7,369.92 is: 11,040.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.96 : 19,820.64 = 7,369.92 : x
  2. Step 2: Convert to fraction form
    13,230.96/19,820.64 = 7,369.92/x
  3. Step 3: Cross multiply
    13,230.96x = 19,820.64 × 7,369.92
  4. Step 4: Simplify right side
    13,230.96x = 146,076,531.15
  5. Step 5: Solve for x
    x = 146,076,531.15/13,230.96
  6. Step 6: Final answer
    x = 11,040.51

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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.