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Finding the Fourth Proportional to 13,359.08, 18,435.81 and 7,391.16

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Solution

The fourth proportional to 13,359.08, 18,435.81 and 7,391.16 is: 10,199.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.08 : 18,435.81 = 7,391.16 : x
  2. Step 2: Convert to fraction form
    13,359.08/18,435.81 = 7,391.16/x
  3. Step 3: Cross multiply
    13,359.08x = 18,435.81 × 7,391.16
  4. Step 4: Simplify right side
    13,359.08x = 136,262,021.44
  5. Step 5: Solve for x
    x = 136,262,021.44/13,359.08
  6. Step 6: Final answer
    x = 10,199.96

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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.