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Finding the Fourth Proportional to 13,455.77, 20,183.77 and 4,690.67

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Solution

The fourth proportional to 13,455.77, 20,183.77 and 4,690.67 is: 7,036.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.77 : 20,183.77 = 4,690.67 : x
  2. Step 2: Convert to fraction form
    13,455.77/20,183.77 = 4,690.67/x
  3. Step 3: Cross multiply
    13,455.77x = 20,183.77 × 4,690.67
  4. Step 4: Simplify right side
    13,455.77x = 94,675,392.70
  5. Step 5: Solve for x
    x = 94,675,392.70/13,455.77
  6. Step 6: Final answer
    x = 7,036.04

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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.