Home / 13,318.55-18,379.65-7,350.23

Finding the Fourth Proportional to 13,318.55, 18,379.65 and 7,350.23

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Solution

The fourth proportional to 13,318.55, 18,379.65 and 7,350.23 is: 10,143.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.55 : 18,379.65 = 7,350.23 : x
  2. Step 2: Convert to fraction form
    13,318.55/18,379.65 = 7,350.23/x
  3. Step 3: Cross multiply
    13,318.55x = 18,379.65 × 7,350.23
  4. Step 4: Simplify right side
    13,318.55x = 135,094,562.92
  5. Step 5: Solve for x
    x = 135,094,562.92/13,318.55
  6. Step 6: Final answer
    x = 10,143.34

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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.