Home / 13,288.08-18,336.88-7,319.62

Finding the Fourth Proportional to 13,288.08, 18,336.88 and 7,319.62

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Solution

The fourth proportional to 13,288.08, 18,336.88 and 7,319.62 is: 10,100.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.08 : 18,336.88 = 7,319.62 : x
  2. Step 2: Convert to fraction form
    13,288.08/18,336.88 = 7,319.62/x
  3. Step 3: Cross multiply
    13,288.08x = 18,336.88 × 7,319.62
  4. Step 4: Simplify right side
    13,288.08x = 134,218,993.59
  5. Step 5: Solve for x
    x = 134,218,993.59/13,288.08
  6. Step 6: Final answer
    x = 10,100.71

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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.