Home / 13,416.81-18,515.27-8,383.96

Finding the Fourth Proportional to 13,416.81, 18,515.27 and 8,383.96

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Solution

The fourth proportional to 13,416.81, 18,515.27 and 8,383.96 is: 11,569.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.81 : 18,515.27 = 8,383.96 : x
  2. Step 2: Convert to fraction form
    13,416.81/18,515.27 = 8,383.96/x
  3. Step 3: Cross multiply
    13,416.81x = 18,515.27 × 8,383.96
  4. Step 4: Simplify right side
    13,416.81x = 155,231,148.57
  5. Step 5: Solve for x
    x = 155,231,148.57/13,416.81
  6. Step 6: Final answer
    x = 11,569.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.