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Finding the Fourth Proportional to 13,959.56, 20,942.40 and 4,599.20

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Solution

The fourth proportional to 13,959.56, 20,942.40 and 4,599.20 is: 6,899.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.56 : 20,942.40 = 4,599.20 : x
  2. Step 2: Convert to fraction form
    13,959.56/20,942.40 = 4,599.20/x
  3. Step 3: Cross multiply
    13,959.56x = 20,942.40 × 4,599.20
  4. Step 4: Simplify right side
    13,959.56x = 96,318,286.08
  5. Step 5: Solve for x
    x = 96,318,286.08/13,959.56
  6. Step 6: Final answer
    x = 6,899.81

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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.