Home / 13,318.92-18,379.56-7,867.92

Finding the Fourth Proportional to 13,318.92, 18,379.56 and 7,867.92

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Solution

The fourth proportional to 13,318.92, 18,379.56 and 7,867.92 is: 10,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.92 : 18,379.56 = 7,867.92 : x
  2. Step 2: Convert to fraction form
    13,318.92/18,379.56 = 7,867.92/x
  3. Step 3: Cross multiply
    13,318.92x = 18,379.56 × 7,867.92
  4. Step 4: Simplify right side
    13,318.92x = 144,608,907.72
  5. Step 5: Solve for x
    x = 144,608,907.72/13,318.92
  6. Step 6: Final answer
    x = 10,857.40

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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.