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Finding the Fourth Proportional to 13,362.60, 20,043.90 and 9,863.40

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Solution

The fourth proportional to 13,362.60, 20,043.90 and 9,863.40 is: 14,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.60 : 20,043.90 = 9,863.40 : x
  2. Step 2: Convert to fraction form
    13,362.60/20,043.90 = 9,863.40/x
  3. Step 3: Cross multiply
    13,362.60x = 20,043.90 × 9,863.40
  4. Step 4: Simplify right side
    13,362.60x = 197,701,003.26
  5. Step 5: Solve for x
    x = 197,701,003.26/13,362.60
  6. Step 6: Final answer
    x = 14,795.10

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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.