Home / 13,318.46-18,379.86-7,269.09

Finding the Fourth Proportional to 13,318.46, 18,379.86 and 7,269.09

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Solution

The fourth proportional to 13,318.46, 18,379.86 and 7,269.09 is: 10,031.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.46 : 18,379.86 = 7,269.09 : x
  2. Step 2: Convert to fraction form
    13,318.46/18,379.86 = 7,269.09/x
  3. Step 3: Cross multiply
    13,318.46x = 18,379.86 × 7,269.09
  4. Step 4: Simplify right side
    13,318.46x = 133,604,856.53
  5. Step 5: Solve for x
    x = 133,604,856.53/13,318.46
  6. Step 6: Final answer
    x = 10,031.55

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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.