Home / 13,688.55-20,433.82-12,027.80

Finding the Fourth Proportional to 13,688.55, 20,433.82 and 12,027.80

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Solution

The fourth proportional to 13,688.55, 20,433.82 and 12,027.80 is: 17,954.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.55 : 20,433.82 = 12,027.80 : x
  2. Step 2: Convert to fraction form
    13,688.55/20,433.82 = 12,027.80/x
  3. Step 3: Cross multiply
    13,688.55x = 20,433.82 × 12,027.80
  4. Step 4: Simplify right side
    13,688.55x = 245,773,921.21
  5. Step 5: Solve for x
    x = 245,773,921.21/13,688.55
  6. Step 6: Final answer
    x = 17,954.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.