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Finding the Fourth Proportional to 13,453.68, 20,183.90 and 4,688.68

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Solution

The fourth proportional to 13,453.68, 20,183.90 and 4,688.68 is: 7,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.68 : 20,183.90 = 4,688.68 : x
  2. Step 2: Convert to fraction form
    13,453.68/20,183.90 = 4,688.68/x
  3. Step 3: Cross multiply
    13,453.68x = 20,183.90 × 4,688.68
  4. Step 4: Simplify right side
    13,453.68x = 94,635,848.25
  5. Step 5: Solve for x
    x = 94,635,848.25/13,453.68
  6. Step 6: Final answer
    x = 7,034.20

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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.