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Finding the Fourth Proportional to 13,804.60, 20,707.08 and 3,944.20

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Solution

The fourth proportional to 13,804.60, 20,707.08 and 3,944.20 is: 5,916.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,804.60 : 20,707.08 = 3,944.20 : x
  2. Step 2: Convert to fraction form
    13,804.60/20,707.08 = 3,944.20/x
  3. Step 3: Cross multiply
    13,804.60x = 20,707.08 × 3,944.20
  4. Step 4: Simplify right side
    13,804.60x = 81,672,864.94
  5. Step 5: Solve for x
    x = 81,672,864.94/13,804.60
  6. Step 6: Final answer
    x = 5,916.35

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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.