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Finding the Fourth Proportional to 13,298.60, 19,947.90 and 8,892.20

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Solution

The fourth proportional to 13,298.60, 19,947.90 and 8,892.20 is: 13,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,298.60 : 19,947.90 = 8,892.20 : x
  2. Step 2: Convert to fraction form
    13,298.60/19,947.90 = 8,892.20/x
  3. Step 3: Cross multiply
    13,298.60x = 19,947.90 × 8,892.20
  4. Step 4: Simplify right side
    13,298.60x = 177,380,716.38
  5. Step 5: Solve for x
    x = 177,380,716.38/13,298.60
  6. Step 6: Final answer
    x = 13,338.30

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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.