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Finding the Fourth Proportional to 13,741.92, 20,614.95 and 4,978.89

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Solution

The fourth proportional to 13,741.92, 20,614.95 and 4,978.89 is: 7,469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,741.92 : 20,614.95 = 4,978.89 : x
  2. Step 2: Convert to fraction form
    13,741.92/20,614.95 = 4,978.89/x
  3. Step 3: Cross multiply
    13,741.92x = 20,614.95 × 4,978.89
  4. Step 4: Simplify right side
    13,741.92x = 102,639,568.41
  5. Step 5: Solve for x
    x = 102,639,568.41/13,741.92
  6. Step 6: Final answer
    x = 7,469.08

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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.