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Finding the Fourth Proportional to 13,958.92, 20,945.58 and 6,173.20

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Solution

The fourth proportional to 13,958.92, 20,945.58 and 6,173.20 is: 9,262.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,958.92 : 20,945.58 = 6,173.20 : x
  2. Step 2: Convert to fraction form
    13,958.92/20,945.58 = 6,173.20/x
  3. Step 3: Cross multiply
    13,958.92x = 20,945.58 × 6,173.20
  4. Step 4: Simplify right side
    13,958.92x = 129,301,254.46
  5. Step 5: Solve for x
    x = 129,301,254.46/13,958.92
  6. Step 6: Final answer
    x = 9,262.98

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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.