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Finding the Fourth Proportional to 13,599.42, 20,399.09 and 7,673.62

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Solution

The fourth proportional to 13,599.42, 20,399.09 and 7,673.62 is: 11,510.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.42 : 20,399.09 = 7,673.62 : x
  2. Step 2: Convert to fraction form
    13,599.42/20,399.09 = 7,673.62/x
  3. Step 3: Cross multiply
    13,599.42x = 20,399.09 × 7,673.62
  4. Step 4: Simplify right side
    13,599.42x = 156,534,803.37
  5. Step 5: Solve for x
    x = 156,534,803.37/13,599.42
  6. Step 6: Final answer
    x = 11,510.40

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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.