Home / 13,690.53-20,535.65-4,330.54

Finding the Fourth Proportional to 13,690.53, 20,535.65 and 4,330.54

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Solution

The fourth proportional to 13,690.53, 20,535.65 and 4,330.54 is: 6,495.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.53 : 20,535.65 = 4,330.54 : x
  2. Step 2: Convert to fraction form
    13,690.53/20,535.65 = 4,330.54/x
  3. Step 3: Cross multiply
    13,690.53x = 20,535.65 × 4,330.54
  4. Step 4: Simplify right side
    13,690.53x = 88,930,453.75
  5. Step 5: Solve for x
    x = 88,930,453.75/13,690.53
  6. Step 6: Final answer
    x = 6,495.76

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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.