Home / 13,318.32-18,379.19-7,349.99

Finding the Fourth Proportional to 13,318.32, 18,379.19 and 7,349.99

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Solution

The fourth proportional to 13,318.32, 18,379.19 and 7,349.99 is: 10,142.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.32 : 18,379.19 = 7,349.99 : x
  2. Step 2: Convert to fraction form
    13,318.32/18,379.19 = 7,349.99/x
  3. Step 3: Cross multiply
    13,318.32x = 18,379.19 × 7,349.99
  4. Step 4: Simplify right side
    13,318.32x = 135,086,812.45
  5. Step 5: Solve for x
    x = 135,086,812.45/13,318.32
  6. Step 6: Final answer
    x = 10,142.93

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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.